Blittable strings generator implementation

Improvements to fixed array generator

.editorconfig

@@ -0,0 +1,129 @@
+[*.{cs,vb}]
+
+# IDE0003: Remove qualification
+dotnet_diagnostic.IDE0003.severity = error
+dotnet_style_operator_placement_when_wrapping = beginning_of_line
+tab_width = 4
+indent_size = 4
+end_of_line = crlf
+dotnet_style_coalesce_expression = true:suggestion
+dotnet_style_null_propagation = true:suggestion
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true:error
+dotnet_style_prefer_auto_properties = true:error
+dotnet_style_object_initializer = true:suggestion
+dotnet_style_collection_initializer = true:suggestion
+dotnet_style_prefer_simplified_boolean_expressions = true:suggestion
+dotnet_style_prefer_conditional_expression_over_assignment = true:silent
+dotnet_style_prefer_conditional_expression_over_return = true:silent
+dotnet_style_explicit_tuple_names = true:suggestion
+dotnet_style_prefer_inferred_tuple_names = true:suggestion
+dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
+dotnet_style_prefer_compound_assignment = true:suggestion
+dotnet_style_prefer_simplified_interpolation = true:suggestion
+dotnet_style_namespace_match_folder = true:suggestion
+
+[*.cs]
+csharp_indent_labels = one_less_than_current
+csharp_space_around_binary_operators = before_and_after
+csharp_using_directive_placement = outside_namespace:error
+csharp_prefer_simple_using_statement = true:error
+csharp_prefer_braces = true:silent
+csharp_style_namespace_declarations = file_scoped:error
+csharp_style_prefer_method_group_conversion = true:silent
+csharp_style_expression_bodied_methods = false:silent
+csharp_style_expression_bodied_constructors = false:silent
+csharp_style_expression_bodied_operators = false:silent
+csharp_style_expression_bodied_properties = true:silent
+csharp_style_expression_bodied_indexers = true:silent
+csharp_style_expression_bodied_accessors = true:silent
+csharp_style_expression_bodied_lambdas = true:silent
+csharp_style_expression_bodied_local_functions = false:silent
+csharp_style_throw_expression = true:suggestion
+csharp_style_prefer_null_check_over_type_check = true:suggestion
+csharp_prefer_simple_default_expression = true:suggestion
+csharp_style_prefer_local_over_anonymous_function = true:error
+csharp_style_prefer_index_operator = true:suggestion
+csharp_style_prefer_range_operator = true:suggestion
+csharp_style_implicit_object_creation_when_type_is_apparent = true:suggestion
+csharp_style_prefer_tuple_swap = true:suggestion
+csharp_style_inlined_variable_declaration = true:suggestion
+csharp_style_deconstructed_variable_declaration = true:error
+csharp_style_unused_value_assignment_preference = discard_variable:error
+csharp_style_unused_value_expression_statement_preference = discard_variable:silent
+csharp_prefer_static_local_function = true:suggestion
+csharp_style_allow_embedded_statements_on_same_line_experimental = true:silent
+csharp_style_allow_blank_lines_between_consecutive_braces_experimental = false:suggestion
+csharp_style_allow_blank_line_after_colon_in_constructor_initializer_experimental = true:silent
+csharp_style_conditional_delegate_call = true:suggestion
+csharp_style_prefer_parameter_null_checking = true:suggestion
+csharp_style_prefer_switch_expression = true:suggestion
+csharp_style_prefer_pattern_matching = true:silent
+csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+csharp_style_prefer_not_pattern = true:suggestion
+csharp_style_prefer_extended_property_pattern = true:suggestion
+csharp_style_var_for_built_in_types = true:suggestion
+csharp_style_var_when_type_is_apparent = true:suggestion
+csharp_style_var_elsewhere = true:suggestion
+[*.{cs,vb}]
+#### Naming styles ####
+
+# Naming rules
+
+dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion
+dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface
+dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i
+
+dotnet_naming_rule.types_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.types_should_be_pascal_case.symbols = types
+dotnet_naming_rule.types_should_be_pascal_case.style = pascal_case
+
+dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members
+dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case
+
+# Symbol specifications
+
+dotnet_naming_symbols.interface.applicable_kinds = interface
+dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.interface.required_modifiers = 
+
+dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum
+dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.types.required_modifiers = 
+
+dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method
+dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.non_field_members.required_modifiers = 
+
+# Naming styles
+
+dotnet_naming_style.begins_with_i.required_prefix = I
+dotnet_naming_style.begins_with_i.required_suffix = 
+dotnet_naming_style.begins_with_i.word_separator = 
+dotnet_naming_style.begins_with_i.capitalization = pascal_case
+
+dotnet_naming_style.pascal_case.required_prefix = 
+dotnet_naming_style.pascal_case.required_suffix = 
+dotnet_naming_style.pascal_case.word_separator = 
+dotnet_naming_style.pascal_case.capitalization = pascal_case
+
+dotnet_naming_style.pascal_case.required_prefix = 
+dotnet_naming_style.pascal_case.required_suffix = 
+dotnet_naming_style.pascal_case.word_separator = 
+dotnet_naming_style.pascal_case.capitalization = pascal_case
+dotnet_style_readonly_field = true:suggestion
+dotnet_style_predefined_type_for_locals_parameters_members = true:silent
+dotnet_style_predefined_type_for_member_access = true:silent
+dotnet_style_require_accessibility_modifiers = for_non_interface_members:silent
+dotnet_style_allow_multiple_blank_lines_experimental = true:silent
+dotnet_style_allow_statement_immediately_after_block_experimental = false:suggestion
+dotnet_code_quality_unused_parameters = all:error
+dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:suggestion
+dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:suggestion
+dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:suggestion
+dotnet_style_parentheses_in_other_operators = never_if_unnecessary:suggestion
+dotnet_style_qualification_for_field = true:error
+dotnet_style_qualification_for_property = true:error
+dotnet_style_qualification_for_method = true:error
+dotnet_style_qualification_for_event = true:error

.github/CODEOWNERS

@@ -0,0 +1 @@
+*	amacocian@yahoo.com

.github/dependabot.yml

@@ -0,0 +1,16 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "nuget"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/cd.yaml

@@ -17,22 +17,23 @@ jobs:
 
     env:
       Configuration: Release
-      Solution_Path: SystemExtensions.sln
+      Solution_Path: SystemExtensions.slnx
       Test_Project_Path: SystemExtensions.Tests\SystemExtensions.NetStandard.Tests.csproj
       DI_Test_Project_Path: SystemExtensions.DependencyInjection.Tests\SystemExtensions.NetStandard.DependencyInjection.Tests.csproj
       Source_Project_Path: SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj
+      Core_Project_Path: SystemExtensions.NetCore\SystemExtensions.NetCore.csproj
       Actions_Allow_Unsecure_Commands: true
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 0
 
     - name: Install .NET Core
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: '5.0.202'
+        dotnet-version: '10.0.x'
 
     - name: Setup MSBuild.exe
       uses: microsoft/setup-msbuild@v1.0.1
@@ -45,17 +46,32 @@ jobs:
     - name: Build SystemExtensions.NetStandard project
       run: dotnet build SystemExtensions.NetStandard -c $env:Configuration
 
+    - name: Build SystemExtensions.NetCore project
+      run: dotnet build SystemExtensions.NetCore -c $env:Configuration
+
     - name: Build SystemExtensions.NetStandard.DependencyInjection project
       run: dotnet build SystemExtensions.NetStandard.DependencyInjection -c $env:Configuration
 
-    - name: Push SystemExtensions.NetStandard nuget package
-      uses: brandedoutcast/publish-nuget@v2.5.5
-      with:
-         PROJECT_FILE_PATH: SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj
-         NUGET_KEY: ${{secrets.NUGET_API_KEY}}
+    - name: Build SystemExtensions.NetStandard.Security project
+      run: dotnet build SystemExtensions.NetStandard.Security -c $env:Configuration
 
-    - name: Push SystemExtensions.NetStandard.DependencyInjection nuget package
-      uses: brandedoutcast/publish-nuget@v2.5.5
-      with:
-         PROJECT_FILE_PATH: SystemExtensions.NetStandard.DependencyInjection\SystemExtensions.NetStandard.DependencyInjection.csproj
-         NUGET_KEY: ${{secrets.NUGET_API_KEY}}
+    - name: Build SystemExtensions.NetStandard.Generators project
+      run: dotnet build SystemExtensions.NetStandard.Generators -c $env:Configuration
+
+    - name: Package SystemExtensions.NetStandard
+      run: dotnet pack -c Release -o . SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj
+
+    - name: Package SystemExtensions.NetCore
+      run: dotnet pack -c Release -o . SystemExtensions.NetCore\SystemExtensions.NetCore.csproj
+
+    - name: Package SystemExtensions.NetStandard.DependencyInjection
+      run: dotnet pack -c Release -o . SystemExtensions.NetStandard.DependencyInjection\SystemExtensions.NetStandard.DependencyInjection.csproj
+
+    - name: Package SystemExtensions.NetStandard.Security
+      run: dotnet pack -c Release -o . SystemExtensions.NetStandard.Security\SystemExtensions.NetStandard.Security.csproj
+
+    - name: Package SystemExtensions.NetStandard.Generators
+      run: dotnet pack -c Release -o . SystemExtensions.NetStandard.Generators\SystemExtensions.NetStandard.Generators.csproj
+
+    - name: Publish
+      run: dotnet nuget push *.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate

.github/workflows/ci.yaml

@@ -19,22 +19,23 @@ jobs:
     runs-on: windows-latest
 
     env:
-      Solution_Path: SystemExtensions.sln
+      Solution_Path: SystemExtensions.slnx
       Test_Project_Path: SystemExtensions.Tests\SystemExtensions.NetStandard.Tests.csproj
       DI_Test_Project_Path: SystemExtensions.DependencyInjection.Tests\SystemExtensions.NetStandard.DependencyInjection.Tests.csproj
+      Sec_Test_Project_Path: SystemExtensions.NetStandard.Security.Tests\SystemExtensions.NetStandard.Security.Tests.csproj
       Source_Project_Path: SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj
       Actions_Allow_Unsecure_Commands: true
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 0
 
     - name: Install .NET Core
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: '5.0.202'
+        dotnet-version: '10.0.x'
 
     - name: Setup MSBuild.exe
       uses: microsoft/setup-msbuild@v1.0.1
@@ -45,6 +46,9 @@ jobs:
     - name: Execute DI Unit Tests
       run: dotnet test $env:DI_Test_Project_Path
 
+    - name: Execute Security Unit Tests
+      run: dotnet test $env:Sec_Test_Project_Path
+
     - name: Restore Project
       run: msbuild $env:Solution_Path /t:Restore /p:Configuration=$env:Configuration /p:RuntimeIdentifier=$env:RuntimeIdentifier
       env:

SystemExtensions.DependencyInjection.Tests/Configuration/DefaultOptionsManagerTests.cs

@@ -1,26 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using System.Configuration;
-
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    [TestClass]
-    public class DefaultOptionsManagerTests
-    {
-        private readonly DefaultOptionsManager optionsManager = new();
-
-        [TestMethod]
-        public void GetOptions_ReturnsDefault()
-        {
-            var options = this.optionsManager.GetOptions<string>();
-
-            options.Should().BeNull();
-        }
-
-        [TestMethod]
-        public void UpdateOptions_Succeeds()
-        {
-            this.optionsManager.UpdateOptions(string.Empty);
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Configuration/DummyOptions.cs

@@ -1,6 +0,0 @@
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    public sealed class DummyOptions
-    {
-    }
-}

SystemExtensions.DependencyInjection.Tests/Configuration/LiveOptionsResolverTests.cs

@@ -1,69 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Configuration;
-
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    [TestClass]
-    public class LiveOptionsResolverTests
-    {
-        private readonly LiveOptionsResolver liveOptionsResolver = new();
-        private readonly Mock<Slim.IServiceProvider> serviceProviderMock = new();
-        private readonly Mock<IOptionsManager> optionsManagerMock = new();
-
-        [TestMethod]
-        public void CanResolve_ILiveOptions_ReturnsTrue()
-        {
-            var type = typeof(ILiveOptions<string>);
-
-            var canResolve = this.liveOptionsResolver.CanResolve(type);
-
-            canResolve.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void CanResolve_AnythingElse_ReturnsFalse()
-        {
-            var types = new Type[] { typeof(object), typeof(string), typeof(LiveOptionsResolverTests), typeof(int) };
-
-            foreach (var type in types)
-            {
-                var canResolve = this.liveOptionsResolver.CanResolve(type);
-
-                canResolve.Should().BeFalse();
-            }
-        }
-
-        [TestMethod]
-        public void Resolve_ILiveOptions_ReturnsILiveOptions()
-        {
-            this.SetupServiceProvider();
-
-            var liveOptions = this.liveOptionsResolver.Resolve(this.serviceProviderMock.Object, typeof(ILiveOptions<string>));
-
-            liveOptions.Should().BeAssignableTo<ILiveOptions<string>>();
-        }
-
-        [TestMethod]
-        public void Resolve_AnythingElse_Throws()
-        {
-            this.SetupServiceProvider();
-
-            Action action = new(() =>
-            {
-                this.liveOptionsResolver.Resolve(this.serviceProviderMock.Object, typeof(string));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-
-        private void SetupServiceProvider()
-        {
-            this.serviceProviderMock
-                .Setup(u => u.GetService<IOptionsManager>())
-                .Returns(this.optionsManagerMock.Object);
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Configuration/LiveUpdateableOptionsResolverTests.cs

@@ -1,69 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Configuration;
-
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    [TestClass]
-    public class LiveUpdateableOptionsResolverTests
-    {
-        private readonly LiveUpdateableOptionsResolver liveUpdateableOptionsResolver = new();
-        private readonly Mock<Slim.IServiceProvider> serviceProviderMock = new();
-        private readonly Mock<IOptionsManager> optionsManagerMock = new();
-
-        [TestMethod]
-        public void CanResolve_ILiveUpdateableOptions_ReturnsTrue()
-        {
-            var type = typeof(ILiveUpdateableOptions<string>);
-
-            var canResolve = this.liveUpdateableOptionsResolver.CanResolve(type);
-
-            canResolve.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void CanResolve_AnythingElse_ReturnsFalse()
-        {
-            var types = new Type[] { typeof(object), typeof(string), typeof(LiveOptionsResolverTests), typeof(int) };
-
-            foreach (var type in types)
-            {
-                var canResolve = this.liveUpdateableOptionsResolver.CanResolve(type);
-
-                canResolve.Should().BeFalse();
-            }
-        }
-
-        [TestMethod]
-        public void Resolve_ILiveUpdateableOptions_ReturnsILiveUpdateableOptions()
-        {
-            this.SetupServiceProvider();
-
-            var liveOptions = this.liveUpdateableOptionsResolver.Resolve(this.serviceProviderMock.Object, typeof(ILiveUpdateableOptions<string>));
-
-            liveOptions.Should().BeAssignableTo<ILiveUpdateableOptions<string>>();
-        }
-
-        [TestMethod]
-        public void Resolve_AnythingElse_Throws()
-        {
-            this.SetupServiceProvider();
-
-            Action action = new(() =>
-            {
-                this.liveUpdateableOptionsResolver.Resolve(this.serviceProviderMock.Object, typeof(string));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-
-        private void SetupServiceProvider()
-        {
-            this.serviceProviderMock
-                .Setup(u => u.GetService<IOptionsManager>())
-                .Returns(this.optionsManagerMock.Object);
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Configuration/LiveUpdateableOptionsWrapperTests.cs

@@ -1,44 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System.Configuration;
-
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    [TestClass]
-    public class LiveUpdateableOptionsWrapperTests
-    {
-        private LiveUpdateableOptionsWrapper<string> optionsWrapper;
-        private readonly Mock<IOptionsManager> optionsManagerMock = new();
-
-        [TestInitialize]
-        public void TestInitialize()
-        {
-            this.optionsWrapper = new LiveUpdateableOptionsWrapper<string>(this.optionsManagerMock.Object);
-        }
-
-        [TestMethod]
-        public void GetValue_ReturnsValue()
-        {
-            this.optionsManagerMock
-                .Setup(u => u.GetOptions<string>())
-                .Returns("hello");
-
-            var value = this.optionsWrapper.Value;
-
-            value.Should().Be("hello");
-        }
-
-        [TestMethod]
-        public void UpdateOption_CallsOptionsManager()
-        {
-            this.optionsManagerMock
-                .Setup(u => u.UpdateOptions<string>(It.IsAny<string>()))
-                .Verifiable();
-
-            this.optionsWrapper.UpdateOption();
-
-            this.optionsManagerMock.Verify();
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Configuration/OptionsResolverTests.cs

@@ -1,72 +0,0 @@
-using FluentAssertions;
-using Microsoft.Extensions.Options;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Configuration;
-
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    [TestClass]
-    public class OptionsResolverTests
-    {
-        private readonly OptionsResolver optionsResolver = new();
-        private readonly Mock<Slim.IServiceProvider> serviceProviderMock = new();
-        private readonly Mock<IOptionsManager> optionsManagerMock = new();
-
-        public Mock<IOptionsManager> OptionsManagerMock => optionsManagerMock;
-
-        [TestMethod]
-        public void CanResolve_ILiveOptions_ReturnsTrue()
-        {
-            var type = typeof(IOptions<string>);
-
-            var canResolve = this.optionsResolver.CanResolve(type);
-
-            canResolve.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void CanResolve_AnythingElse_ReturnsFalse()
-        {
-            var types = new Type[] { typeof(object), typeof(string), typeof(OptionsResolverTests), typeof(int) };
-
-            foreach (var type in types)
-            {
-                var canResolve = this.optionsResolver.CanResolve(type);
-
-                canResolve.Should().BeFalse();
-            }
-        }
-
-        [TestMethod]
-        public void Resolve_IOptions_ReturnsIOptions()
-        {
-            this.SetupServiceProvider();
-
-            var liveOptions = this.optionsResolver.Resolve(this.serviceProviderMock.Object, typeof(IOptions<string>));
-
-            liveOptions.Should().BeAssignableTo<IOptions<string>>();
-        }
-
-        [TestMethod]
-        public void Resolve_AnythingElse_Throws()
-        {
-            this.SetupServiceProvider();
-
-            Action action = new(() =>
-            {
-                this.optionsResolver.Resolve(this.serviceProviderMock.Object, typeof(string));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-
-        private void SetupServiceProvider()
-        {
-            this.serviceProviderMock
-                .Setup(u => u.GetService<IOptionsManager>())
-                .Returns(this.OptionsManagerMock.Object);
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Configuration/UpdateableOptionsResolverTests.cs

@@ -1,69 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Configuration;
-
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    [TestClass]
-    public class UpdateableOptionsResolverTests
-    {
-        private readonly UpdateableOptionsResolver updateableOptionsResolver = new();
-        private readonly Mock<Slim.IServiceProvider> serviceProviderMock = new();
-        private readonly Mock<IOptionsManager> optionsManagerMock = new();
-
-        [TestMethod]
-        public void CanResolve_ILiveOptions_ReturnsTrue()
-        {
-            var type = typeof(IUpdateableOptions<string>);
-
-            var canResolve = this.updateableOptionsResolver.CanResolve(type);
-
-            canResolve.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void CanResolve_AnythingElse_ReturnsFalse()
-        {
-            var types = new Type[] { typeof(object), typeof(string), typeof(UpdateableOptionsResolverTests), typeof(int) };
-
-            foreach (var type in types)
-            {
-                var canResolve = this.updateableOptionsResolver.CanResolve(type);
-
-                canResolve.Should().BeFalse();
-            }
-        }
-
-        [TestMethod]
-        public void Resolve_IUpdateableOptions_ReturnsIUpdateableOptions()
-        {
-            this.SetupServiceProvider();
-
-            var liveOptions = this.updateableOptionsResolver.Resolve(this.serviceProviderMock.Object, typeof(IUpdateableOptions<string>));
-
-            liveOptions.Should().BeAssignableTo<IUpdateableOptions<string>>();
-        }
-
-        [TestMethod]
-        public void Resolve_AnythingElse_Throws()
-        {
-            this.SetupServiceProvider();
-
-            Action action = new(() =>
-            {
-                this.updateableOptionsResolver.Resolve(this.serviceProviderMock.Object, typeof(string));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-
-        private void SetupServiceProvider()
-        {
-            this.serviceProviderMock
-                .Setup(u => u.GetService<IOptionsManager>())
-                .Returns(this.optionsManagerMock.Object);
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Configuration/UpdateableOptionsWrapperTests.cs

@@ -1,47 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Configuration;
-
-namespace SystemExtensions.DependencyInjection.Tests.Configuration
-{
-    [TestClass]
-    public class UpdateableOptionsWrapperTests
-    {
-        private const string Value = "hello";
-
-        private UpdateableOptionsWrapper<string> optionsWrapper;
-        private readonly Mock<IOptionsManager> optionsManagerMock = new();
-
-        [TestInitialize]
-        public void TestInitialize()
-        {
-            this.optionsWrapper = new UpdateableOptionsWrapper<string>(optionsManagerMock.Object, Value);
-        }
-
-        [TestMethod]
-        public void GetValue_ReturnsValue()
-        {
-            this.optionsManagerMock
-                .Setup(u => u.GetOptions<string>())
-                .Throws<Exception>();
-
-            var value = this.optionsWrapper.Value;
-
-            value.Should().Be(Value);
-        }
-
-        [TestMethod]
-        public void UpdateOption_CallsOptionsManager()
-        {
-            this.optionsManagerMock
-                .Setup(u => u.UpdateOptions<string>(It.IsAny<string>()))
-                .Verifiable();
-
-            this.optionsWrapper.UpdateOption();
-
-            this.optionsManagerMock.Verify();
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Http/HttpClientBuilderTests.cs

@@ -0,0 +1,96 @@
+using FluentAssertions;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using NSubstitute;
+using NSubstitute.ExceptionExtensions;
+using System;
+using System.Linq;
+using System.Net.Http;
+using System.Threading.Tasks;
+using SystemExtensions.NetStandard.DependencyInjection.Tests.Http.Models;
+
+namespace SystemExtensions.NetStandard.DependencyInjection.Tests.Http;
+
+[TestClass]
+public sealed class HttpClientBuilderTests
+{
+    private const string SomeHeader = "SomeHeader";
+    private const string SomeValue = "SomeValue";
+
+    private readonly HttpClientBuilder<object> httpClientBuilder;
+    private readonly IServiceCollection serviceProducerMock = Substitute.For<IServiceCollection>();
+    private readonly Uri baseAddress = new("http://contoso.co");
+
+    public HttpClientBuilderTests()
+    {
+        this.httpClientBuilder = new HttpClientBuilder<object>(this.serviceProducerMock);
+    }
+
+    [TestMethod]
+    public void Constructor_NullServiceProducer_Throws()
+    {
+        var action = () => new HttpClientBuilder<object>(null);
+
+        action.Should().Throw<ArgumentNullException>();
+    }
+
+    [TestMethod]
+    public void WithMessageHandler_NullHandler_Throws()
+    {
+        var action = () => this.httpClientBuilder.WithMessageHandler(null);
+
+        action.Should().Throw<ArgumentNullException>();
+    }
+
+    [TestMethod]
+    public void WithBaseAddress_NullBaseAddress_Throws()
+    {
+        var action = () => this.httpClientBuilder.WithBaseAddress(null);
+
+        action.Should().Throw<ArgumentNullException>();
+    }
+
+    [TestMethod]
+    public void WithDefaultRequestHeadersSetup_NullSetup_Throws()
+    {
+        var action = () => this.httpClientBuilder.WithDefaultRequestHeadersSetup(null);
+
+        action.Should().Throw<ArgumentNullException>();
+    }
+
+    [TestMethod]
+    public void Build_ReturnsServiceProducer()
+    {
+        var producer = this.httpClientBuilder.Build();
+
+        producer.Should().BeEquivalentTo(this.serviceProducerMock);
+    }
+
+    [TestMethod]
+    public async Task HttpClientBuilder_RegistersClientCorrectly_IServiceProviderReturnsExpected()
+    {
+        var container = new ServiceCollection();
+        var messageHandler = new HttpMessageHandlerMock();
+        new HttpClientBuilder<object>(container)
+            .WithBaseAddress(this.baseAddress)
+            .WithDefaultRequestHeadersSetup(header => header.TryAddWithoutValidation(SomeHeader, SomeValue))
+            .WithMaxResponseBufferSize(5)
+            .WithMessageHandler(sp => messageHandler)
+            .WithTimeout(TimeSpan.FromSeconds(5))
+            .Build();
+
+        var di = container.BuildServiceProvider();
+        var client = di.GetService<IHttpClient<object>>();
+        await client.GetAsync("");
+
+        client.Should().NotBeNull();
+        client.BaseAddress.Should().Be(this.baseAddress);
+        client.DefaultRequestHeaders.Should().HaveCount(1);
+        client.DefaultRequestHeaders.First().Key.Should().Be(SomeHeader);
+        client.DefaultRequestHeaders.First().Value.Should().HaveCount(1);
+        client.DefaultRequestHeaders.First().Value.First().Should().Be(SomeValue);
+        client.MaxResponseContentBufferSize.Should().Be(5);
+        client.Timeout.Should().Be(TimeSpan.FromSeconds(5));
+        messageHandler.Called.Should().BeTrue();
+    }
+}

SystemExtensions.DependencyInjection.Tests/Http/HttpClientResolverTests.cs

@@ -1,69 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Http;
-using System.Net.Http;
-
-namespace SystemExtensions.DependencyInjection.Tests.Http
-{
-    [TestClass]
-    public class HttpClientResolverTests
-    {
-        private readonly HttpClientResolver httpClientResolver = new();
-        private readonly Mock<Slim.IServiceProvider> serviceProviderMock = new();
-
-        [TestMethod]
-        public void CanResolve_IHttpClient_ReturnsTrue()
-        {
-            var type = typeof(IHttpClient<>);
-
-            var canResolve = this.httpClientResolver.CanResolve(type);
-
-            canResolve.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void CanResolve_AnythingElse_ReturnsFalse()
-        {
-            var types = new Type[] { typeof(HttpClient), typeof(object), typeof(string), typeof(HttpClientResolverTests), typeof(int) };
-
-            foreach (var type in types)
-            {
-                var canResolve = this.httpClientResolver.CanResolve(type);
-
-                canResolve.Should().BeFalse();
-            }
-        }
-
-        [TestMethod]
-        public void Resolve_TypedClient_ReturnsIHttpClient()
-        {
-            var client = this.httpClientResolver.Resolve(this.serviceProviderMock.Object, typeof(IHttpClient<string>));
-
-            client.Should().BeAssignableTo<IHttpClient<string>>();
-        }
-
-        [TestMethod]
-        public void Resolve_NonGenericType_Throws()
-        {
-            Action action = new(() =>
-            {
-                this.httpClientResolver.Resolve(this.serviceProviderMock.Object, typeof(IHttpClient<>));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-
-        [TestMethod]
-        public void Resolve_RandomType_Throws()
-        {
-            Action action = new(() =>
-            {
-                this.httpClientResolver.Resolve(this.serviceProviderMock.Object, typeof(string));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Http/Models/HttpMessageHandlerMock.cs

@@ -0,0 +1,16 @@
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.DependencyInjection.Tests.Http.Models;
+public sealed class HttpMessageHandlerMock : HttpMessageHandler
+{
+    public bool Called { get; private set; }
+
+    protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+    {
+        this.Called = true;
+
+        return Task.FromResult(new HttpResponseMessage());
+    }
+}

SystemExtensions.DependencyInjection.Tests/Logging/CVLoggerProviderTests.cs

@@ -1,43 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System.Logging;
-
-namespace SystemExtensions.DependencyInjection.Tests.Logging
-{
-    [TestClass]
-    public class CVLoggerProviderTests
-    {
-        private readonly Mock<ILogsWriter> logsWriterMock = new();
-        private CVLoggerProvider cVLoggerProvider;
-
-        [TestInitialize]
-        public void TestInitialize()
-        {
-            this.cVLoggerProvider = new CVLoggerProvider(this.logsWriterMock.Object);
-        }
-
-        [TestMethod]
-        public void CreateLogger_CreatesNewLogger()
-        {
-            var logger = this.cVLoggerProvider.CreateLogger(string.Empty);
-
-            logger.Should().NotBeNull();
-        }
-
-        [TestMethod]
-        public void LogEntry_CallsLogWriter()
-        {
-            this.cVLoggerProvider.LogEntry(new Log());
-
-            this.logsWriterMock.Verify();
-        }
-
-        private void SetupLogsWriter()
-        {
-            this.logsWriterMock
-                .Setup(u => u.WriteLog(It.IsAny<Log>()))
-                .Verifiable();
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Logging/CVLoggerTests.cs

@@ -1,76 +0,0 @@
-using FluentAssertions;
-using Microsoft.Extensions.Logging;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Logging;
-
-namespace SystemExtensions.DependencyInjection.Tests.Logging
-{
-    [TestClass]
-    public class CVLoggerTests
-    {
-        private readonly Mock<ICVLoggerProvider> cvLoggerProviderMock = new();
-        private CVLogger cVLogger;
-
-        [TestInitialize]
-        public void TestInitialize()
-        {
-            this.cVLogger = new CVLogger(string.Empty, this.cvLoggerProviderMock.Object);
-        }
-
-        [TestMethod]
-        public void BeginScope_ReturnsNull()
-        {
-            var scope = this.cVLogger.BeginScope(string.Empty);
-
-            scope.Should().BeNull();
-        }
-
-        [TestMethod]
-        [DataRow(LogLevel.Debug)]
-        [DataRow(LogLevel.Trace)]
-        [DataRow(LogLevel.Information)]
-        [DataRow(LogLevel.Warning)]
-        [DataRow(LogLevel.Error)]
-        [DataRow(LogLevel.Critical)]
-        public void IsEnabled_OnAllLogLevels_ReturnsTrue(LogLevel logLevel)
-        {
-            var enabled = this.cVLogger.IsEnabled(logLevel);
-
-            enabled.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void Log_CallsFormatter()
-        {
-            var called = false;
-            Func<string, Exception, string> messageFormatter = new((state, exception) =>
-            {
-                called = true;
-                return string.Empty;
-            });
-
-            this.cVLogger.Log(LogLevel.Debug, new EventId(), "Some message", new Exception(), messageFormatter);
-
-            called.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void Log_CallsLogsProvider()
-        {
-            this.SetupLoggerProvider();
-
-            this.cVLogger.Log(LogLevel.Debug, new EventId(), "Some message", new Exception(), new Func<string, Exception, string>((s, e) => string.Empty));
-
-            this.cvLoggerProviderMock.Verify();
-        }
-
-        private void SetupLoggerProvider()
-        {
-            this.cvLoggerProviderMock
-                .Setup(u => u.LogEntry(It.IsAny<Log>()))
-                .Verifiable();
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Logging/DebugLogsWriterTests.cs

@@ -1,30 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using System;
-using System.Logging;
-
-namespace SystemExtensions.DependencyInjection.Tests.Logging
-{
-    [TestClass]
-    public class DebugLogsWriterTests
-    {
-        private readonly DebugLogsWriter logsWriter = new();
-
-        [TestMethod]
-        public void WriteLog_Succeeds()
-        {
-            this.logsWriter.WriteLog(new Log());
-        }
-
-        [TestMethod]
-        public void WriteNullLog_Throws()
-        {
-            Action action = new(() =>
-            {
-                this.logsWriter.WriteLog(null);
-            });
-
-            action.Should().Throw<Exception>();
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/Logging/LoggerResolverTests.cs

@@ -1,109 +0,0 @@
-using FluentAssertions;
-using Microsoft.Extensions.Logging;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Moq;
-using System;
-using System.Logging;
-using System.Windows.Extensions.Logging;
-
-namespace SystemExtensions.DependencyInjection.Tests.Logging
-{
-    [TestClass]
-    public class LoggerResolverTests
-    {
-        private readonly Mock<Slim.IServiceProvider> serviceProviderMock = new();
-        private readonly Mock<ILoggerFactory> loggerFactoryMock = new();
-        private readonly Mock<ILogger> loggerMock = new();
-        private readonly LoggerResolver loggerResolver = new();
-
-        [TestMethod]
-        public void CanResolve_ILogger_ReturnsTrue()
-        {
-            var type = typeof(ILogger);
-
-            var canResolve = this.loggerResolver.CanResolve(type);
-
-            canResolve.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void CanResolve_GenericILogger_ReturnsTrue()
-        {
-            var type = typeof(ILogger<string>);
-
-            var canResolve = this.loggerResolver.CanResolve(type);
-
-            canResolve.Should().BeTrue();
-        }
-
-        [TestMethod]
-        public void CanResolve_AnythingElse_ReturnsFalse()
-        {
-            var types = new Type[] { typeof(CVLogger), typeof(object), typeof(string), typeof(LoggerResolverTests), typeof(int) };
-
-            foreach(var type in types)
-            {
-                var canResolve = this.loggerResolver.CanResolve(type);
-
-                canResolve.Should().BeFalse();
-            }   
-        }
-
-        [TestMethod]
-        public void Resolve_ILogger_ReturnsILogger()
-        {
-            this.SetupIServiceProvider();
-
-            var logger = this.loggerResolver.Resolve(this.serviceProviderMock.Object, typeof(ILogger));
-
-            logger.Should().BeAssignableTo<ILogger>();
-        }
-
-        [TestMethod]
-        public void Resolve_TypedILogger_ReturnsTypedILogger()
-        {
-            this.SetupIServiceProvider();
-
-            var logger = this.loggerResolver.Resolve(this.serviceProviderMock.Object, typeof(ILogger<string>));
-
-            logger.Should().BeAssignableTo<ILogger<string>>();
-        }
-
-        [TestMethod]
-        public void Resolve_RandomType_Throws()
-        {
-            this.SetupIServiceProvider();
-
-            Action action = new(() =>
-            {
-                this.loggerResolver.Resolve(this.serviceProviderMock.Object, typeof(string));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-
-        [TestMethod]
-        public void Resolve_NonTypedGeneric_Throws()
-        {
-            this.SetupIServiceProvider();
-
-            Action action = new(() =>
-            {
-                this.loggerResolver.Resolve(this.serviceProviderMock.Object, typeof(ILogger<>));
-            });
-
-            action.Should().Throw<Exception>();
-        }
-
-        private void SetupIServiceProvider()
-        {
-            this.serviceProviderMock
-                .Setup(u => u.GetService<ILoggerFactory>())
-                .Returns(this.loggerFactoryMock.Object);
-
-            this.loggerFactoryMock
-                .Setup(u => u.CreateLogger(It.IsAny<string>()))
-                .Returns(this.loggerMock.Object);
-        }
-    }
-}

SystemExtensions.DependencyInjection.Tests/SystemExtensions.NetStandard.DependencyInjection.Tests.csproj

@@ -1,18 +1,25 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="5.10.3" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
-    <PackageReference Include="Moq" Version="4.16.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.2.3" />
-    <PackageReference Include="MSTest.TestFramework" Version="2.2.3" />
-    <PackageReference Include="coverlet.collector" Version="3.0.2" />
+    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.2" />
+    <PackageReference Include="coverlet.collector" Version="6.0.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.1.0" />
+    <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.17">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
   </ItemGroup>
 
   <ItemGroup>

SystemExtensions.DependencyInjection.Tests/WebSockets/ClientWebSocketBuilderTests.cs

@@ -0,0 +1,70 @@
+using FluentAssertions;
+using global::SystemExtensions.NetStandard.DependencyInjection.Tests.Http.Models;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using NSubstitute;
+using System;
+using System.Extensions;
+using System.Linq;
+using System.Net.Http;
+using System.Net.WebSockets;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.DependencyInjection.Tests.WebSockets;
+[TestClass]
+public sealed class HttpClientBuilderTests
+{
+    private readonly ClientWebSocketBuilder<object> clientWebSocketBuilder;
+    private readonly IServiceCollection serviceProducerMock = Substitute.For<IServiceCollection>();
+
+    public HttpClientBuilderTests()
+    {
+        this.clientWebSocketBuilder = new ClientWebSocketBuilder<object>(this.serviceProducerMock);
+    }
+
+    [TestMethod]
+    public void Constructor_NullServiceProducer_Throws()
+    {
+        var action = () => new ClientWebSocketBuilder<object>(null);
+
+        action.Should().Throw<ArgumentNullException>();
+    }
+
+    [TestMethod]
+    public void WithInnerWebSocket_NullHandler_Throws()
+    {
+        var action = () => this.clientWebSocketBuilder.WithInnerWebSocket(null);
+
+        action.Should().Throw<ArgumentNullException>();
+    }
+
+    [TestMethod]
+    public void WIthInnerWebSocketFactory_NullBaseAddress_Throws()
+    {
+        var action = () => this.clientWebSocketBuilder.WithInnerWebSocketFactory(null);
+
+        action.Should().Throw<ArgumentNullException>();
+    }
+
+    [TestMethod]
+    public void Build_ReturnsServiceProducer()
+    {
+        var producer = this.clientWebSocketBuilder.Build();
+
+        producer.Should().BeEquivalentTo(this.serviceProducerMock);
+    }
+
+    [TestMethod]
+    public async Task ClientWebSocketBuilder_RegistersClientCorrectly_IServiceProviderReturnsExpected()
+    {
+        var container = new ServiceCollection();
+        var innerWebSocket = new ClientWebSocket();
+        container.RegisterClientWebSocket<object>()
+            .WithInnerWebSocket(innerWebSocket)
+            .Build();
+
+        var di = container.BuildServiceProvider();
+        var client = di.GetService<IClientWebSocket<object>>();
+        client.Should().NotBeNull();
+    }
+}

SystemExtensions.NetCore/Extensions/LoggingExtensions.cs

@@ -0,0 +1,17 @@
+using Microsoft.Extensions.Logging;
+using System.Logging;
+using System.Runtime.CompilerServices;
+
+namespace System.Extensions.Core;
+public static class LoggingExtensions
+{
+    public static ScopedLogger<T> CreateScopedLogger<T>(this ILogger<T> logger, string flowIdentifier, [CallerMemberName] string? methodName = default)
+    {
+        return ScopedLogger<T>.Create(logger, methodName ?? string.Empty, flowIdentifier);
+    }
+
+    public static ScopedLogger<T> CreateScopedLogger<T>(this ILogger<T> logger, [CallerMemberName] string? methodName = default)
+    {
+        return ScopedLogger<T>.Create(logger, methodName ?? string.Empty, string.Empty);
+    }
+}

SystemExtensions.NetCore/Extensions/ObjectExtensions.cs

@@ -0,0 +1,18 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Runtime.CompilerServices;
+
+namespace System.Core.Extensions;
+
+public static class ObjectExtensions
+{
+    public static T ThrowIfNull<T>([NotNull] this T? obj, [CallerArgumentExpression("obj")] string? paramName = null)
+        where T : class
+    {
+        if (obj is null)
+        {
+            throw new ArgumentNullException(paramName);
+        }
+
+        return obj;
+    }
+}

SystemExtensions.NetCore/SystemExtensions.NetCore.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+	  <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <Nullable>enable</Nullable>
+    <RootNamespace>System</RootNamespace>
+	  <PackageLicenseFile>LICENSE</PackageLicenseFile>
+	  <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
+	  <Version>1.9</Version>
+	  <Authors>Alexandru Macocian</Authors>
+	  <RepositoryUrl>https://github.com/AlexMacocian/SystemExtensions</RepositoryUrl>
+	  <Description>Extensions for the System namespace</Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+	<None Include="../LICENSE">
+		<Pack>True</Pack>
+		<PackagePath></PackagePath>
+	</None>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj" />
+  </ItemGroup>
+</Project>

SystemExtensions.NetStandard.DependencyInjection/Configuration/DefaultOptionsManager.cs

@@ -1,14 +0,0 @@
-namespace System.Configuration
-{
-    public sealed class DefaultOptionsManager : IOptionsManager
-    {
-        public T GetOptions<T>() where T : class
-        {
-            return default;
-        }
-
-        public void UpdateOptions<T>(T value) where T : class
-        {
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/ILiveOptions.cs

@@ -1,9 +0,0 @@
-using Microsoft.Extensions.Options;
-
-namespace System.Configuration
-{
-    public interface ILiveOptions<T> : IOptions<T>
-        where T : class
-    {
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/ILiveUpdateableOptions.cs

@@ -1,7 +0,0 @@
-namespace System.Configuration
-{
-    public interface ILiveUpdateableOptions<T> : ILiveOptions<T>, IUpdateableOptions<T>
-        where T : class
-    {
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/IOptionsManager.cs

@@ -1,10 +0,0 @@
-namespace System.Configuration
-{
-    public interface IOptionsManager
-    {
-        T GetOptions<T>()
-            where T : class;
-        void UpdateOptions<T>(T value)
-            where T : class;
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/IUpdateableOptions.cs

@@ -1,13 +0,0 @@
-using Microsoft.Extensions.Options;
-
-namespace System.Configuration
-{
-    public interface IUpdateableOptions<out T> : IOptions<T>
-        where T : class
-    {
-        /// <summary>
-        /// Updates the configuration with the current value stored in <see cref="IOptions{TOptions}.Value"/>.
-        /// </summary>
-        void UpdateOption();
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/LiveOptionsResolver.cs

@@ -1,27 +0,0 @@
-using Slim.Resolvers;
-
-namespace System.Configuration
-{
-    public sealed class LiveOptionsResolver : IDependencyResolver
-    {
-        private static readonly Type optionsType = typeof(LiveUpdateableOptionsWrapper<>);
-
-        public bool CanResolve(Type type)
-        {
-            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(ILiveOptions<>))
-            {
-                return true;
-            }
-
-            return false;
-        }
-
-        public object Resolve(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            var typedOptionsType = optionsType.MakeGenericType(type.GetGenericArguments());
-            var configurationManager = serviceProvider.GetService<IOptionsManager>();
-
-            return Activator.CreateInstance(typedOptionsType, configurationManager);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/LiveUpdateableOptionsResolver.cs

@@ -1,26 +0,0 @@
-using Slim.Resolvers;
-
-namespace System.Configuration
-{
-    public sealed class LiveUpdateableOptionsResolver : IDependencyResolver
-    {
-        private static readonly Type optionsType = typeof(LiveUpdateableOptionsWrapper<>);
-
-        public bool CanResolve(Type type)
-        {
-            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(ILiveUpdateableOptions<>))
-            {
-                return true;
-            }
-
-            return false;
-        }
-
-        public object Resolve(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            var typedOptionsType = optionsType.MakeGenericType(type.GetGenericArguments());
-            var configurationManager = serviceProvider.GetService<IOptionsManager>();
-            return Activator.CreateInstance(typedOptionsType, configurationManager);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/LiveUpdateableOptionsWrapper.cs

@@ -1,31 +0,0 @@
-using System.Extensions;
-
-namespace System.Configuration
-{
-    public sealed class LiveUpdateableOptionsWrapper<T> : ILiveUpdateableOptions<T>
-        where T : class
-    {
-        private readonly IOptionsManager configurationManager;
-
-        private T value;
-
-        public T Value
-        {
-            get
-            {
-                this.value = this.configurationManager.GetOptions<T>();
-                return this.value;
-            }
-        }
-
-        public LiveUpdateableOptionsWrapper(IOptionsManager configurationManager)
-        {
-            this.configurationManager = configurationManager.ThrowIfNull(nameof(configurationManager));
-        }
-
-        public void UpdateOption()
-        {
-            this.configurationManager.UpdateOptions<T>(this.value);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/OptionsResolver.cs

@@ -1,33 +0,0 @@
-using Microsoft.Extensions.Options;
-using Slim.Resolvers;
-
-namespace System.Configuration
-{
-    public sealed class OptionsResolver : IDependencyResolver
-    {
-        private static readonly Type optionsType = typeof(OptionsWrapper<>);
-        private static readonly Type configurationType = typeof(IOptionsManager);
-
-        public bool CanResolve(Type type)
-        {
-            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IOptions<>))
-            {
-                return true;
-            }
-
-            return false;
-        }
-
-        public object Resolve(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            var typedOptionsType = optionsType.MakeGenericType(type.GetGenericArguments());
-            var configurationManager = serviceProvider.GetService<IOptionsManager>();
-            var optionsValue = configurationType
-                .GetMethod(nameof(IOptionsManager.GetOptions))
-                .MakeGenericMethod(type.GetGenericArguments())
-                .Invoke(configurationManager, Array.Empty<object>());
-
-            return Activator.CreateInstance(typedOptionsType, optionsValue);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/UpdateableOptionsResolver.cs

@@ -1,32 +0,0 @@
-using Slim.Resolvers;
-
-namespace System.Configuration
-{
-    public sealed class UpdateableOptionsResolver : IDependencyResolver
-    {
-        private static readonly Type optionsType = typeof(UpdateableOptionsWrapper<>);
-        private static readonly Type configurationType = typeof(IOptionsManager);
-
-        public bool CanResolve(Type type)
-        {
-            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IUpdateableOptions<>))
-            {
-                return true;
-            }
-
-            return false;
-        }
-
-        public object Resolve(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            var typedOptionsType = optionsType.MakeGenericType(type.GetGenericArguments());
-            var configurationManager = serviceProvider.GetService<IOptionsManager>();
-            var optionsValue = configurationType
-                .GetMethod(nameof(IOptionsManager.GetOptions))
-                .MakeGenericMethod(type.GetGenericArguments())
-                .Invoke(configurationManager, Array.Empty<object>());
-
-            return Activator.CreateInstance(typedOptionsType, configurationManager, optionsValue);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Configuration/UpdateableOptionsWrapper.cs

@@ -1,23 +0,0 @@
-using System.Extensions;
-
-namespace System.Configuration
-{
-    public sealed class UpdateableOptionsWrapper<T> : IUpdateableOptions<T>
-        where T : class
-    {
-        private readonly IOptionsManager configurationManager;
-        
-        public T Value { get; }
-
-        public UpdateableOptionsWrapper(IOptionsManager configurationManager, T options)
-        {
-            this.configurationManager = configurationManager.ThrowIfNull(nameof(configurationManager));
-            this.Value = options;
-        }
-
-        public void UpdateOption()
-        {
-            this.configurationManager.UpdateOptions(this.Value);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Extensions/ServiceCollectionExtensions.cs

@@ -0,0 +1,34 @@
+using Microsoft.Extensions.DependencyInjection;
+using System.Net.Http;
+using System.Net.WebSockets;
+
+namespace System.Extensions;
+
+public static class ServiceCollectionExtensions
+{
+    /// <summary>
+    /// Register a scoped <see cref="IHttpClient{TScope}"/> to be used by the DI engine.
+    /// </summary>
+    /// <typeparam name="T">Type of the scoped <see cref="IHttpClient{TScope}"/>.</typeparam>
+    /// <param name="services"><see cref="IServiceCollection"/>.</param>
+    /// <returns><see cref="HttpClientBuilder{T}"/> to build the http client.</returns>
+    public static HttpClientBuilder<T> RegisterHttpClient<T>(this IServiceCollection services)
+    {
+        services.ThrowIfNull(nameof(services));
+
+        return new HttpClientBuilder<T>(services);
+    }
+
+    /// <summary>
+    /// Register a scoped <see cref="IClientWebSocket{TScope}"/> to be used by the DI engine.
+    /// </summary>
+    /// <typeparam name="T">Type of the scoped <see cref="IClientWebSocket{TScope}"/>.</typeparam>
+    /// <param name="services"><see cref="IServiceCollection"/>.</param>
+    /// <returns><see cref="ClientWebSocketBuilder{T}"/> to build the websocket client.</returns>
+    public static ClientWebSocketBuilder<T> RegisterClientWebSocket<T>(this IServiceCollection services)
+    {
+        services.ThrowIfNull(nameof(services));
+
+        return new ClientWebSocketBuilder<T>(services);
+    }
+}

SystemExtensions.NetStandard.DependencyInjection/Extensions/ServiceManagerExtensions.cs

@@ -1,141 +0,0 @@
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
-using Slim;
-using System.Configuration;
-using System.Http;
-using System.Logging;
-using System.Net.Http;
-
-namespace System.Extensions
-{
-    public static class ServiceManagerExtensions
-    {
-        /// <summary>
-        /// Registers a <see cref="IOptionsManager"/> with the default <see cref="DefaultOptionsManager"/>.
-        /// This call also registers the resolver that resolves <see cref="IUpdateableOptions{T}"/> and <see cref="IOptions{T}"/>.
-        /// </summary>
-        /// <param name="serviceManager"><see cref="IServiceManager"/>.</param>
-        /// <returns>Provided <see cref="IServiceManager"/>.</returns>
-        public static IServiceManager RegisterOptionsManager(this IServiceManager serviceManager)
-        {
-            serviceManager.RegisterSingleton<IOptionsManager, DefaultOptionsManager>();
-            serviceManager.RegisterOptionsResolver();
-
-            return serviceManager;
-        }
-
-        /// <summary>
-        /// Registers a <see cref="IOptionsManager"/>.
-        /// This call also registers the resolver that resolves <see cref="IUpdateableOptions{T}"/> and <see cref="IOptions{T}"/>.
-        /// </summary>
-        /// <typeparam name="T">Implementation of <see cref="IOptionsManager"/>.</typeparam>
-        /// <param name="serviceManager"><see cref="IServiceManager"/>.</param>
-        /// <returns>Provided <see cref="IServiceManager"/>.</returns>
-        public static IServiceManager RegisterOptionsManager<T>(this IServiceManager serviceManager)
-            where T : IOptionsManager
-        {
-            serviceManager.RegisterSingleton<IOptionsManager, T>();
-            serviceManager.RegisterOptionsResolver();
-
-            return serviceManager;
-        }
-
-        /// <summary>
-        /// Registers resolvers for <see cref="IOptions{TOptions}"/> and <see cref="IUpdateableOptions{T}"/>.
-        /// Depends on a <see cref="IOptionsManager"/> in order to properly resolve options.
-        /// </summary>
-        /// <param name="serviceManager"><see cref="IServiceManager"/>.</param>
-        /// <returns><see cref="IServiceManager"/>.</returns>
-        public static IServiceManager RegisterOptionsResolver(this IServiceManager serviceManager)
-        {
-            serviceManager.ThrowIfNull(nameof(serviceManager));
-
-            serviceManager.RegisterResolver(new OptionsResolver());
-            serviceManager.RegisterResolver(new UpdateableOptionsResolver());
-            serviceManager.RegisterResolver(new LiveOptionsResolver());
-            serviceManager.RegisterResolver(new LiveUpdateableOptionsResolver());
-
-            return serviceManager;
-        }
-
-        /// <summary>
-        /// Registers a <see cref="ILogsWriter"/> with the default <see cref="CVLoggerProvider"/>.
-        /// </summary>
-        /// <typeparam name="TLogsWriter">Implementation of <see cref="ILogsWriter"/>.</typeparam>
-        /// <param name="serviceManager"><see cref="IServiceProducer"/>.</param>
-        /// <returns>Provided <see cref="IServiceProducer"/>.</returns>
-        public static IServiceProducer RegisterLogWriter<TLogsWriter>(this IServiceProducer serviceManager)
-            where TLogsWriter : ILogsWriter
-        {
-            serviceManager.ThrowIfNull(nameof(serviceManager));
-
-            serviceManager.RegisterSingleton<ILogsWriter, TLogsWriter>();
-            serviceManager.RegisterScoped<ILoggerFactory, LoggerFactory>(sp =>
-            {
-                var factory = new LoggerFactory();
-                factory.AddProvider(new CVLoggerProvider(sp.GetService<ILogsWriter>()));
-                return factory;
-            });
-
-            return serviceManager;
-        }
-
-        /// <summary>
-        /// Registers a <see cref="ILogsWriter"/> with the default <see cref="CVLoggerProvider"/>.
-        /// </summary>
-        /// <typeparam name="TILogsWriter">Interface of <see cref="ILogsWriter"/>.</typeparam>
-        /// <typeparam name="TLogsWriter">Implementation of <see cref="ILogsWriter"/>.</typeparam>
-        /// <param name="serviceManager"><see cref="IServiceProducer"/>.</param>
-        /// <returns>Provided <see cref="IServiceProducer"/>.</returns>
-        public static IServiceProducer RegisterLogWriter<TILogsWriter, TLogsWriter>(this IServiceProducer serviceManager)
-            where TLogsWriter : TILogsWriter
-            where TILogsWriter : class, ILogsWriter
-        {
-            serviceManager.ThrowIfNull(nameof(serviceManager));
-
-            serviceManager.RegisterSingleton<TILogsWriter, TLogsWriter>();
-            serviceManager.RegisterScoped<ILoggerFactory, LoggerFactory>(sp =>
-            {
-                var factory = new LoggerFactory();
-                factory.AddProvider(new CVLoggerProvider(sp.GetService<TILogsWriter>()));
-                return factory;
-            });
-
-            return serviceManager;
-        }
-
-        public static IServiceManager RegisterLoggerFactory(this IServiceManager serviceManager, Func<Slim.IServiceProvider, ILoggerFactory> loggerFactory)
-        {
-            serviceManager.ThrowIfNull(nameof(serviceManager));
-
-            serviceManager.RegisterSingleton<ILoggerFactory, ILoggerFactory>(loggerFactory);
-            return serviceManager;
-        }
-
-        public static IServiceManager RegisterDebugLoggerFactory(this IServiceManager serviceManager)
-        {
-            serviceManager.ThrowIfNull(nameof(serviceManager));
-
-            serviceManager.RegisterLogWriter<ILogsWriter, DebugLogsWriter>();
-            return serviceManager;
-        }
-
-        public static IServiceManager RegisterHttpFactory(this IServiceManager serviceManager)
-        {
-            serviceManager.ThrowIfNull(nameof(serviceManager));
-
-            serviceManager.RegisterResolver(new HttpClientResolver());
-            return serviceManager;
-        }
-
-        public static IServiceManager RegisterHttpFactory(this IServiceManager serviceManager, Func<Slim.IServiceProvider, Type, HttpMessageHandler> handlerFactory)
-        {
-            serviceManager.ThrowIfNull(nameof(serviceManager));
-
-            serviceManager.RegisterResolver(
-                new HttpClientResolver()
-                .WithHttpMessageHandlerFactory(handlerFactory));
-            return serviceManager;
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Global.cs

@@ -0,0 +1,3 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("SystemExtensions.NetStandard.DependencyInjection.Tests")]

SystemExtensions.NetStandard.DependencyInjection/Http/HttpClientBuilder.cs

@@ -0,0 +1,88 @@
+using Microsoft.Extensions.DependencyInjection;
+using System.Extensions;
+using System.Net.Http.Headers;
+
+namespace System.Net.Http;
+
+public sealed class HttpClientBuilder<T>
+{
+    private readonly IServiceCollection services;
+
+    private Uri? baseAddress;
+    private Func<IServiceProvider, HttpMessageHandler>? httpMessageHandlerFactory;
+    private Action<HttpRequestHeaders>? defaultRequestHeadersSetup;
+    private bool disposeMessageHandler;
+    private long maxResponseBufferSize = 2147483647L; //2GB default HttpClient value [https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient.maxresponsecontentbuffersize?view=net-6.0]
+    private TimeSpan timeout = TimeSpan.FromSeconds(100); //100 seconds default HttpClient value [https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient.timeout?view=net-6.0]
+
+    internal HttpClientBuilder(IServiceCollection services)
+    {
+        services.ThrowIfNull(nameof(services));
+
+        this.services = services;
+    }
+
+    public HttpClientBuilder<T> WithMessageHandler(Func<IServiceProvider, HttpMessageHandler> httpMessageHandlerFactory)
+    {
+        httpMessageHandlerFactory.ThrowIfNull(nameof(httpMessageHandlerFactory));
+
+        this.httpMessageHandlerFactory = httpMessageHandlerFactory;
+        return this;
+    }
+
+    public HttpClientBuilder<T> WithDisposeMessageHandler(bool disposeMessageHandler)
+    {
+        this.disposeMessageHandler = disposeMessageHandler;
+        return this;
+    }
+
+    public HttpClientBuilder<T> WithBaseAddress(Uri baseAddress)
+    {
+        baseAddress.ThrowIfNull(nameof(baseAddress));
+
+        this.baseAddress = baseAddress;
+        return this;
+    }
+
+    public HttpClientBuilder<T> WithDefaultRequestHeadersSetup(Action<HttpRequestHeaders> setup)
+    {
+        setup.ThrowIfNull(nameof(setup));
+
+        this.defaultRequestHeadersSetup = setup;
+        return this;
+    }
+
+    public HttpClientBuilder<T> WithMaxResponseBufferSize(long responseBufferSize)
+    {
+        this.maxResponseBufferSize = responseBufferSize;
+        return this;
+    }
+
+    public HttpClientBuilder<T> WithTimeout(TimeSpan timeout)
+    {
+        this.timeout = timeout;
+        return this;
+    }
+
+    public IServiceCollection Build()
+    {
+        this.services.AddScoped<IHttpClient<T>>(sp =>
+        {
+            var client = this.httpMessageHandlerFactory is not null ?
+                new HttpClient<T>(this.httpMessageHandlerFactory(sp), this.disposeMessageHandler) :
+                new HttpClient<T>(true);
+
+            if (this.baseAddress is not null)
+            {
+                client.BaseAddress = this.baseAddress;
+            }
+
+            this.defaultRequestHeadersSetup?.Invoke(client.DefaultRequestHeaders);
+            client.MaxResponseContentBufferSize = this.maxResponseBufferSize;
+            client.Timeout = this.timeout;
+            return client;
+        });
+
+        return this.services;
+    }
+}

SystemExtensions.NetStandard.DependencyInjection/Http/HttpClientResolver.cs

@@ -1,47 +0,0 @@
-using Slim.Resolvers;
-using System.Linq;
-using System.Net.Http;
-
-namespace System.Http
-{
-    public sealed class HttpClientResolver : IDependencyResolver
-    {
-        private static readonly Type clientType = typeof(HttpClient<>);
-
-        /// <summary>
-        /// Factory method. <see cref="Type"/> parameter of the factory is the scope of <see cref="IHttpClient{TScope}"/>.
-        /// </summary>
-        public Func<Slim.IServiceProvider, Type, HttpMessageHandler> HttpMessageHandlerFactory { get; set; }
-
-        /// <summary>
-        /// Sets the <see cref="HttpMessageHandlerFactory"/>.
-        /// </summary>
-        /// <param name="factory">Factory method. <see cref="Type"/> parameter of the factory is the scope of <see cref="IHttpClient{TScope}"/>.</param>
-        /// <returns></returns>
-        public HttpClientResolver WithHttpMessageHandlerFactory(Func<Slim.IServiceProvider, Type, HttpMessageHandler> factory)
-        {
-            this.HttpMessageHandlerFactory = factory;
-            return this;
-        }
-
-        public bool CanResolve(Type type)
-        {
-            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IHttpClient<>))
-            {
-                return true;
-            }
-
-            return false;
-        }
-
-        public object Resolve(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            var typedClientType = clientType.MakeGenericType(type.GetGenericArguments());
-            var handler = this.HttpMessageHandlerFactory?.Invoke(serviceProvider, type.GetGenericArguments().First());
-            var httpClient = handler is null ?
-                Activator.CreateInstance(typedClientType) :
-                Activator.CreateInstance(typedClientType, new object[] { handler });
-            return httpClient;
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Logging/CVLogger.cs

@@ -1,44 +0,0 @@
-using Microsoft.Extensions.Logging;
-using System.Extensions;
-
-namespace System.Logging
-{
-    public sealed class CVLogger : ILogger
-    {
-        private readonly string category;
-        private readonly ICVLoggerProvider cvLoggerProvider;
-
-        public CVLogger(string category, ICVLoggerProvider cvLoggerProvider)
-        {
-            this.category = category;
-            this.cvLoggerProvider = cvLoggerProvider.ThrowIfNull(nameof(cvLoggerProvider));
-        }
-
-        public IDisposable BeginScope<TState>(TState state)
-        {
-            return null;
-        }
-
-        public bool IsEnabled(LogLevel logLevel)
-        {
-            return true;
-        }
-
-        public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
-        {
-            var message = formatter(state, exception);
-
-            var log = new Log
-            {
-                Exception = exception,
-                LogLevel = logLevel,
-                EventId = eventId.Name,
-                Message = message,
-                Category = category,
-                LogTime = DateTime.Now
-            };
-
-            this.cvLoggerProvider.LogEntry(log);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Logging/CVLoggerProvider.cs

@@ -1,44 +0,0 @@
-using Microsoft.CorrelationVector;
-using Microsoft.Extensions.Logging;
-using System.Extensions;
-
-namespace System.Logging
-{
-    public sealed class CVLoggerProvider : ICVLoggerProvider
-    {
-        private readonly ILogsWriter logsManager;
-        private CorrelationVector correlationVector;
-
-        public CVLoggerProvider(ILogsWriter logsWriter)
-        {
-            this.logsManager = logsWriter.ThrowIfNull(nameof(logsWriter));
-            this.correlationVector = new CorrelationVector();
-        }
-
-        public void LogEntry(Log log)
-        {
-            if (this.correlationVector is not null)
-            {
-                log.CorrelationVector = this.correlationVector.Value.ToString();
-                this.correlationVector.Increment();
-            }
-
-            this.logsManager.WriteLog(log);
-        }
-
-        public ILogger CreateLogger(string categoryName)
-        {
-            if (this.correlationVector is not null)
-            {
-                this.correlationVector = CorrelationVector.Extend(this.correlationVector.ToString());
-            }
-
-            return new CVLogger(categoryName, this);
-        }
-
-        public void Dispose()
-        {
-            throw new System.NotImplementedException();
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Logging/DebugLogsWriter.cs

@@ -1,12 +0,0 @@
-using System.Diagnostics;
-
-namespace System.Logging
-{
-    public sealed class DebugLogsWriter : ILogsWriter
-    {
-        public void WriteLog(Log log)
-        {
-            Debug.WriteLine($"{log.LogTime} - {log.Category} - {log.EventId} - {log.CorrelationVector} - {log.LogLevel} - {log.Message}{Environment.NewLine}{log.Exception}");
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Logging/ICVLoggerProvider.cs

@@ -1,9 +0,0 @@
-using Microsoft.Extensions.Logging;
-
-namespace System.Logging
-{
-    public interface ICVLoggerProvider : ILoggerProvider
-    {
-        void LogEntry(Log log);
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Logging/ILogsWriter.cs

@@ -1,7 +0,0 @@
-namespace System.Logging
-{
-    public interface ILogsWriter
-    {
-        void WriteLog(Log log);
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Logging/LoggerResolver.cs

@@ -1,50 +0,0 @@
-using Microsoft.Extensions.Logging;
-using Slim.Resolvers;
-using System.Linq;
-
-namespace System.Windows.Extensions.Logging
-{
-    public sealed class LoggerResolver : IDependencyResolver
-    {
-        public bool CanResolve(Type type)
-        {
-            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(ILogger<>) ||
-                type == typeof(ILogger))
-            {
-                return true;
-            }
-
-            return false;
-        }
-
-        public object Resolve(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(ILogger<>))
-            {
-                return ResolveScopedLogger(serviceProvider, type);
-            }
-            else if (type == typeof(ILogger))
-            {
-                return ResolveLogger(serviceProvider, type);
-            }
-            else
-            {
-                throw new InvalidOperationException($"{nameof(LoggerResolver)} cannot resolve an object of type {type.Name}");
-            }
-        }
-
-        private static object ResolveScopedLogger(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            var loggerFactory = serviceProvider.GetService<ILoggerFactory>();
-            var categoryTypes = type.GetGenericArguments();
-            var createLoggerMethod = typeof(LoggerFactoryExtensions).GetMethods().Where(m => m.IsGenericMethodDefinition && m.Name == nameof(LoggerFactoryExtensions.CreateLogger)).First();
-            return createLoggerMethod.MakeGenericMethod(categoryTypes.First()).Invoke(null, new object[] { loggerFactory });
-        }
-
-        private static object ResolveLogger(Slim.IServiceProvider serviceProvider, Type type)
-        {
-            var loggerFactory = serviceProvider.GetService<ILoggerFactory>();
-            return loggerFactory.CreateLogger(string.Empty);
-        }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/Models/Log.cs

@@ -1,15 +0,0 @@
-using Microsoft.Extensions.Logging;
-
-namespace System.Logging
-{
-    public sealed record Log
-    {
-        public Exception Exception { get; set; }
-        public DateTime LogTime { get; set; }
-        public string Category { get; set; }
-        public string EventId { get; set; }
-        public LogLevel LogLevel { get; set; }
-        public string Message { get; set; }
-        public string CorrelationVector { get; set; }
-    }
-}

SystemExtensions.NetStandard.DependencyInjection/SystemExtensions.NetStandard.DependencyInjection.csproj

@@ -6,9 +6,11 @@
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <LangVersion>latest</LangVersion>
-    <Version>1.1.0</Version>
+    <Version>1.8</Version>
     <Authors>Alexandru Macocian</Authors>
     <RepositoryUrl>https://github.com/AlexMacocian/SystemExtensions</RepositoryUrl>
+    <Description>Extensions for the Slim Dependency Injection engine</Description>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
@@ -20,9 +22,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.CorrelationVector" Version="1.0.42" />
-    <PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />
-    <PackageReference Include="Slim" Version="1.5.1" />
-    <PackageReference Include="SystemExtensions.NetStandard" Version="1.3.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="10.0.1" />
+    <PackageReference Include="SystemExtensions.NetStandard" Version="1.8.0" />
   </ItemGroup>
 
 </Project>

SystemExtensions.NetStandard.DependencyInjection/WebSockets/ClientWebSocketBuilder.cs

@@ -0,0 +1,58 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using System.Extensions;
+using System.Net.WebSockets;
+
+namespace System.Net.Http;
+
+public sealed class ClientWebSocketBuilder<T>
+{
+    private readonly IServiceCollection services;
+
+    private ClientWebSocket? innerWebSocket;
+    private Func<IServiceProvider, ClientWebSocket>? innerWebSocketFactory;
+
+    internal ClientWebSocketBuilder(IServiceCollection services)
+    {
+        services.ThrowIfNull(nameof(services));
+        this.services = services;
+    }
+
+    public ClientWebSocketBuilder<T> WithInnerWebSocket(ClientWebSocket innerWebSocket)
+    {
+        this.innerWebSocket = innerWebSocket.ThrowIfNull(nameof(innerWebSocket));
+        return this;
+    }
+
+    public ClientWebSocketBuilder<T> WithInnerWebSocketFactory(Func<IServiceProvider, ClientWebSocket> innerWebSocketFactory)
+    {
+        this.innerWebSocketFactory = innerWebSocketFactory.ThrowIfNull(nameof(innerWebSocketFactory));
+        return this;
+    }
+
+    public IServiceCollection Build()
+    {
+        this.services.AddScoped<IClientWebSocket<T>>(sp =>
+        {
+            var logger = sp.GetService<ILogger<T>>();
+            if (logger is null)
+            {
+                return new ClientWebSocket<T>();
+            }
+
+            if (this.innerWebSocketFactory is not null)
+            {
+                return new ClientWebSocket<T>(this.innerWebSocketFactory(sp), logger);
+            }
+
+            if (this.innerWebSocket is not null)
+            {
+                return new ClientWebSocket<T>(this.innerWebSocket, logger);
+            }
+
+            return new ClientWebSocket<T>(logger);
+        });
+
+        return this.services;
+    }
+}

SystemExtensions.NetStandard.Generators/BlittableStringGenerator.cs

@@ -0,0 +1,142 @@
+using Microsoft.CodeAnalysis;
+using Sybil;
+using System.Text;
+using System.Linq;
+
+namespace System.Extensions;
+#nullable enable
+[Generator(LanguageNames.CSharp)]
+public class BlittableStringGenerator : IIncrementalGenerator
+{
+    private const string UsingSystem = "System";
+    private const string UsingSystemRuntimeInterop = "System.Runtime.InteropServices";
+    private const string AttributeNamespace = "System.Extensions";
+    private const string AttributeName = "GenerateBlittableStringAttribute";
+    private const string AttributeShortName = "GenerateBlittableString";
+    private const string String = "String";
+    private const string Public = "public";
+    private const string Required = "required";
+    private const string Size = "Size";
+    private const string Int = "int";
+
+    public void Initialize(IncrementalGeneratorInitializationContext context)
+    {
+        context.RegisterPostInitializationOutput(context =>
+        {
+            var compilationUnitBuilder = SyntaxBuilder.CreateCompilationUnit()
+                .WithNamespace(
+                SyntaxBuilder.CreateNamespace(AttributeNamespace)
+                    .WithClass(SyntaxBuilder.CreateClass(AttributeName)
+                        .WithModifier(Public)
+                        .WithConstructor(SyntaxBuilder.CreateConstructor(AttributeName)
+                            .WithModifier(Public))
+                        .WithAttribute(SyntaxBuilder.CreateAttribute("AttributeUsage")
+                            .WithArgument(AttributeTargets.Assembly)
+                            .WithArgument("Inherited", false)
+                            .WithArgument("AllowMultiple", true))
+                        .WithProperty(SyntaxBuilder.CreateProperty(Int, Size)
+                            .WithModifier(Public)
+                            .WithModifier(Required)
+                            .WithAccessor(SyntaxBuilder.CreateGetter())
+                            .WithAccessor(SyntaxBuilder.CreateSetter()))
+                        .WithBaseClass(nameof(Attribute))));
+            var compilationUnitSyntax = compilationUnitBuilder.Build();
+            var source = compilationUnitSyntax.ToFullString();
+            context.AddSource($"{AttributeName}.g", source);
+        });
+
+        context.RegisterSourceOutput(context.CompilationProvider, (sourceProductionContext, compilation) =>
+        {
+            var assemblyAttributes =
+            compilation.Assembly.GetAttributes().Where(a => a.AttributeClass != null &&
+                        (a.AttributeClass.Name == AttributeName || a.AttributeClass.Name == AttributeShortName));
+
+            foreach (var attr in assemblyAttributes)
+            {
+                // Extract the Size parameter from the named arguments.
+                int? fixedSize = default;
+                foreach (var arg in attr.NamedArguments)
+                {
+                    if (arg.Key == Size && arg.Value.Value is int intValue)
+                    {
+                        fixedSize = intValue;
+                        break;
+                    }
+                }
+
+                if (fixedSize is null)
+                {
+                    // As Size is required, skip if not provided.
+                    continue;
+                }
+
+                Execute(sourceProductionContext, (int)fixedSize);
+            }
+        });
+    }
+
+    private static void Execute(SourceProductionContext sourceProductionContext, int size)
+    {
+        var structName = $"{String}{size}";
+        var builder = new StringBuilder();
+        builder.AppendLine($"using {UsingSystem};");
+        builder.AppendLine($"using {UsingSystemRuntimeInterop};");
+        builder.AppendLine();
+        builder.AppendLine($"namespace {AttributeNamespace};");
+        builder.AppendLine();
+        builder.AppendLine("[StructLayout(LayoutKind.Sequential, Pack = 1)]");
+        builder.AppendLine($"public unsafe partial struct {structName}");
+        builder.AppendLine("{");
+        builder.AppendLine($"    public const int Size = {size};");
+        builder.AppendLine();
+        builder.AppendLine("    public fixed char Value[Size];");
+        builder.AppendLine();
+        builder.AppendLine("    public Span<char> AsSpan()");
+        builder.AppendLine("    {");
+        builder.AppendLine("        fixed (char* ptr = this.Value)");
+        builder.AppendLine("        {");
+        builder.AppendLine("            return MemoryMarshal.CreateSpan(ref *ptr, Size);");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine("    public readonly ReadOnlySpan<char> AsReadOnlySpan()");
+        builder.AppendLine("    {");
+        builder.AppendLine("        fixed (char* ptr = this.Value)");
+        builder.AppendLine("        {");
+        builder.AppendLine("            return new ReadOnlySpan<char>(ptr, Size);");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine("    public void Set(ReadOnlySpan<char> value)");
+        builder.AppendLine("    {");
+        builder.AppendLine("        fixed (char* ptr = this.Value)");
+        builder.AppendLine("        {");
+        builder.AppendLine("            var span = MemoryMarshal.CreateSpan(ref *ptr, Size);");
+        builder.AppendLine("            span.Clear();");
+        builder.AppendLine("            value[..Math.Min(value.Length, Size - 1)].CopyTo(span);");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine("    public override readonly string ToString()");
+        builder.AppendLine("    {");
+        builder.AppendLine("        var span = this.AsReadOnlySpan();");
+        builder.AppendLine("        var nullIndex = span.IndexOf('\\0');");
+        builder.AppendLine("        return nullIndex >= 0 ? new string(span[..nullIndex]) : new string(span);");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine($"    public static implicit operator string({structName} value) => value.ToString();");
+        builder.AppendLine();
+        builder.AppendLine($"    public static implicit operator {structName}(string value)");
+        builder.AppendLine("    {");
+        builder.AppendLine($"        var result = default({structName});");
+        builder.AppendLine("        result.Set(value);");
+        builder.AppendLine("        return result;");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine($"    public static implicit operator ReadOnlySpan<char>({structName} value) => value.AsReadOnlySpan();");
+        builder.AppendLine("}");
+
+        sourceProductionContext.AddSource($"{structName}.g.cs", builder.ToString());
+    }
+}
+#nullable disable

SystemExtensions.NetStandard.Generators/Diagnostics.cs

@@ -0,0 +1,78 @@
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Text;
+
+namespace System.Extensions;
+
+internal static class Diagnostics
+{
+    public const string DependencyPropertyGenerator_NoAttributeFound = "DGD 0001";
+    public const string DependencyPropertyGenerator_ClassMustBeTopLevel = "DGD 1001";
+    public const string DependencyPropertyGenerator_ClassMustBePartial = "DGD 1002";
+    public const string DependencyPropertyGenerator_ClassMustBeInNamespace = "DGD 1003";
+    public const string DependencyPropertyGenerator_ClassMustImplementINotifyPropertyChanged = "DGD 1004";
+
+    public static Diagnostic MissingAttributeDiagnostic(string attributeName, string attributeNamespace) => Diagnostic.Create(
+                new DiagnosticDescriptor(
+                    DependencyPropertyGenerator_NoAttributeFound,
+                    $"{attributeNamespace}.{attributeName} not found",
+                    "Could not find attribute with name {0} in namespace {1}.",
+                    "SystemExtensions.NetStandard.Generators",
+                    DiagnosticSeverity.Error,
+                    true,
+                    $"This error occurs when the attribute generated by the {nameof(NotifyPropertyChangedGenerator)} is not found",
+                    null),
+                Location.None,
+                attributeName, attributeNamespace);
+
+    public static Diagnostic ClassNotTopLevelDiagnostic(string className, string containingSymbol, SyntaxTree syntaxTree, TextSpan textSpan) => Diagnostic.Create(
+                new DiagnosticDescriptor(
+                    DependencyPropertyGenerator_ClassMustBeTopLevel,
+                    $"{className} must be top level",
+                    "Class {0} must be top level. It is currently declared under {1}.",
+                    "SystemExtensions.NetStandard.Generators",
+                    DiagnosticSeverity.Error,
+                    true,
+                    null,
+                    null),
+                Location.Create(syntaxTree, textSpan),
+                className, containingSymbol);
+
+    public static Diagnostic ClassNotPartial(string className) => Diagnostic.Create(
+                new DiagnosticDescriptor(
+                    DependencyPropertyGenerator_ClassMustBePartial,
+                    $"{className} is not partial",
+                    "Class {0} must be marked as partial in order for the generator to work",
+                    "SystemExtensions.NetStandard.Generators",
+                    DiagnosticSeverity.Error,
+                    true,
+                    null,
+                    null),
+                Location.None,
+                className);
+
+    public static Diagnostic ClassNotInNamespace(string className) => Diagnostic.Create(
+                new DiagnosticDescriptor(
+                    DependencyPropertyGenerator_ClassMustBeInNamespace,
+                    $"{className} is not defined in a namespace",
+                    "Class {0} must be defined inside a namespace for the generator to work",
+                    "SystemExtensions.NetStandard.Generators",
+                    DiagnosticSeverity.Error,
+                    true,
+                    null,
+                    null),
+                Location.None,
+                className);
+
+    public static Diagnostic ClassDoesNotImplementINotifyPropertyChanged(string className) => Diagnostic.Create(
+                new DiagnosticDescriptor(
+                    DependencyPropertyGenerator_ClassMustImplementINotifyPropertyChanged,
+                    $"{className} must implement INotifyPropertyChanged",
+                    "Class {0} must implement INotifyPropertyChanged for the generator to work",
+                    "SystemExtensions.NetStandard.Generators",
+                    DiagnosticSeverity.Error,
+                    true,
+                    null,
+                    null),
+                Location.None,
+                className);
+}

SystemExtensions.NetStandard.Generators/FixedArrayGenerator.cs

@@ -0,0 +1,164 @@
+using Microsoft.CodeAnalysis;
+using Sybil;
+using System.Text;
+using System.Linq;
+
+namespace System.Extensions;
+#nullable enable
+[Generator(LanguageNames.CSharp)]
+public class FixedArrayGenerator : IIncrementalGenerator
+{
+    private const string UsingSystem = "System";
+    private const string UsingSystemRuntimeInterop = "System.Runtime.InteropServices";
+    private const string AttributeNamespace = "System.Extensions";
+    private const string AttributeName = "GenerateFixedArrayAttribute";
+    private const string AttributeShortName = "GenerateFixedArray";
+    private const string Array = "Array";
+    private const string Public = "public";
+    private const string Struct = "struct";
+    private const string Required = "required";
+    private const string Size = "Size";
+    private const string Int = "int";
+    private const string TType = "T";
+
+    public void Initialize(IncrementalGeneratorInitializationContext context)
+    {
+        context.RegisterPostInitializationOutput(context =>
+        {
+            var compilationUnitBuilder = SyntaxBuilder.CreateCompilationUnit()
+                .WithNamespace(
+                SyntaxBuilder.CreateNamespace(AttributeNamespace)
+                    .WithClass(SyntaxBuilder.CreateClass(AttributeName)
+                        .WithModifier(Public)
+                        .WithTypeParameter(SyntaxBuilder.CreateTypeParameter(TType))
+                        .WithTypeParameterConstraint(SyntaxBuilder.CreateTypeParameterConstraint(TType)
+                            .WithType(Struct))
+                        .WithConstructor(SyntaxBuilder.CreateConstructor(AttributeName)
+                            .WithModifier(Public))
+                        .WithAttribute(SyntaxBuilder.CreateAttribute("AttributeUsage")
+                            .WithArgument(AttributeTargets.Assembly)
+                            .WithArgument("Inherited", false)
+                            .WithArgument("AllowMultiple", true))
+                        .WithProperty(SyntaxBuilder.CreateProperty(Int, Size)
+                            .WithModifier(Public)
+                            .WithModifier(Required)
+                            .WithAccessor(SyntaxBuilder.CreateGetter())
+                            .WithAccessor(SyntaxBuilder.CreateSetter()))
+                        .WithBaseClass(nameof(Attribute))));
+            var compilationUnitSyntax = compilationUnitBuilder.Build();
+            var source = compilationUnitSyntax.ToFullString();
+            context.AddSource($"{AttributeName}.g", source);
+        });
+
+        context.RegisterSourceOutput(context.CompilationProvider, (sourceProductionContext, compilation) =>
+        {
+            var assemblyAttributes =
+            compilation.Assembly.GetAttributes().Where(a => a.AttributeClass != null &&
+                        (a.AttributeClass.Name == AttributeName || a.AttributeClass.Name == AttributeShortName));
+
+            foreach (var attr in assemblyAttributes)
+            {
+                // Extract the type argument (T) from GenerateFixedArrayAttribute<T>
+                var namedTypeSymbol = attr.AttributeClass as INamedTypeSymbol;
+                if (namedTypeSymbol is null || namedTypeSymbol.TypeArguments.Length != 1)
+                {
+                    continue;
+                }
+
+                var targetType = namedTypeSymbol.TypeArguments[0].ToDisplayString(SymbolDisplayFormat.MinimallyQualifiedFormat);
+                // Extract the Size parameter from the named arguments.
+                int? fixedSize = default;
+                foreach (var arg in attr.NamedArguments)
+                {
+                    if (arg.Key == Size && arg.Value.Value is int intValue)
+                    {
+                        fixedSize = intValue;
+                        break;
+                    }
+                }
+
+                if (fixedSize is null)
+                {
+                    // As Size is required, skip if not provided.
+                    continue;
+                }
+
+                Execute(sourceProductionContext, targetType, (int)fixedSize);
+            }
+        });
+    }
+
+    private static void Execute(SourceProductionContext sourceProductionContext, string targetType, int size)
+    {
+        var capitalizedType = targetType.ToUpperInvariant()[0] + targetType.Substring(1);
+        var structName = $"{Array}{size}{capitalizedType}";
+        var builder = new StringBuilder();
+        builder.AppendLine($"using {UsingSystem};");
+        builder.AppendLine($"using {UsingSystemRuntimeInterop};");
+        builder.AppendLine();
+        builder.AppendLine($"namespace {AttributeNamespace};");
+        builder.AppendLine();
+        builder.AppendLine("[StructLayout(LayoutKind.Sequential, Pack = 1)]");
+        builder.AppendLine($"public unsafe struct {structName}");
+        builder.AppendLine("{");
+        builder.AppendLine($"    private const int Size = {size};");
+        builder.AppendLine();
+        builder.AppendLine($"    private fixed {targetType} elements[Size];");
+        builder.AppendLine();
+        builder.AppendLine("    public int Length => Size;");
+        builder.AppendLine();
+        builder.AppendLine($"    public ref {targetType} this[int index]");
+        builder.AppendLine("    {");
+        builder.AppendLine("        get");
+        builder.AppendLine("        {");
+        builder.AppendLine("            if ((uint)index >= Size) throw new IndexOutOfRangeException();");
+        builder.AppendLine($"            return ref this.elements[index];");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine($"    public Span<{targetType}> AsSpan()");
+        builder.AppendLine("    {");
+        builder.AppendLine($"        fixed ({targetType}* ptr = this.elements)");
+        builder.AppendLine("        {");
+        builder.AppendLine($"            return MemoryMarshal.CreateSpan(ref *ptr, Size);");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine($"    public readonly ReadOnlySpan<{targetType}> AsReadOnlySpan()");
+        builder.AppendLine("    {");
+        builder.AppendLine($"        fixed ({targetType}* ptr = this.elements)");
+        builder.AppendLine("        {");
+        builder.AppendLine($"            return new ReadOnlySpan<{targetType}>(ptr, Size);");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine($"    public void Set(ReadOnlySpan<{targetType}> value)");
+        builder.AppendLine("    {");
+        builder.AppendLine($"        fixed ({targetType}* ptr = this.elements)");
+        builder.AppendLine("        {");
+        builder.AppendLine($"            var span = MemoryMarshal.CreateSpan(ref *ptr, Size);");
+        builder.AppendLine("            span.Clear();");
+        builder.AppendLine("            value[..Math.Min(value.Length, Size)].CopyTo(span);");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine($"    public void Clear()");
+        builder.AppendLine("    {");
+        builder.AppendLine($"        fixed ({targetType}* ptr = this.elements)");
+        builder.AppendLine("        {");
+        builder.AppendLine($"            MemoryMarshal.CreateSpan(ref *ptr, Size).Clear();");
+        builder.AppendLine("        }");
+        builder.AppendLine("    }");
+        builder.AppendLine();
+        builder.AppendLine($"    public static {structName} From{capitalizedType}Array({targetType}[] array)");
+        builder.AppendLine("    {");
+        builder.AppendLine($"        var arr = default({structName});");
+        builder.AppendLine("        arr.Set(array);");
+        builder.AppendLine("        return arr;");
+        builder.AppendLine("    }");
+        builder.AppendLine("}");
+
+        sourceProductionContext.AddSource($"{structName}.g.cs", builder.ToString());
+    }
+}
+#nullable disable

SystemExtensions.NetStandard.Generators/NotifyPropertyChangedGenerator.cs

@@ -0,0 +1,173 @@
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Sybil;
+using System.Collections.Immutable;
+using System.Linq;
+
+namespace System.Extensions;
+#nullable enable
+[Generator(LanguageNames.CSharp)]
+public class NotifyPropertyChangedGenerator : IIncrementalGenerator
+{
+    private const string AttributeNamespace = "System.Extensions";
+    private const string AttributeName = "GenerateNotifyPropertyChangedAttribute";
+    private const string AttributeShortName = "GenerateNotifyPropertyChanged";
+    private const string PropertyChangedEventHandler = "PropertyChangedEventHandler";
+    private const string NullablePropertyChangedEventHandler = "PropertyChangedEventHandler?";
+    private const string PropertyChanged = "PropertyChanged";
+    private const string Partial = "partial";
+    private const string Public = "public";
+
+    public void Initialize(IncrementalGeneratorInitializationContext context)
+    {
+        context.RegisterPostInitializationOutput(context =>
+        {
+            var compilationUnitBuilder = SyntaxBuilder.CreateCompilationUnit()
+                .WithNamespace(
+                SyntaxBuilder.CreateNamespace(AttributeNamespace)
+                    .WithClass(SyntaxBuilder.CreateClass(AttributeName)
+                        .WithModifier(Public)
+                    .WithConstructor(SyntaxBuilder.CreateConstructor(AttributeName)
+                        .WithModifier(Public))
+                    .WithAttribute(SyntaxBuilder.CreateAttribute("AttributeUsage")
+                        .WithArgument(AttributeTargets.Field)
+                        .WithArgument("Inherited", false)
+                        .WithArgument("AllowMultiple", false))
+                    .WithBaseClass(nameof(Attribute))));
+            var compilationUnitSyntax = compilationUnitBuilder.Build();
+            var source = compilationUnitSyntax.ToFullString();
+            context.AddSource($"{AttributeName}.g", source);
+        });
+
+        var classDeclarations = context.SyntaxProvider.CreateSyntaxProvider(
+            predicate: static (s, _) => s is FieldDeclarationSyntax,
+            transform: static (ctx, _) => GetFilteredFieldDeclarationSyntax(ctx)).Where(static c => c is not null);
+
+        var compilationAndClasses = context.CompilationProvider.Combine(classDeclarations.Collect());
+        context.RegisterSourceOutput(compilationAndClasses, (sourceProductionContext, tuple) => Execute(tuple.Left, tuple.Right, sourceProductionContext));
+    }
+
+    private static ClassDeclarationSyntax? GetFilteredFieldDeclarationSyntax(GeneratorSyntaxContext context)
+    {
+        var fieldDeclarationSyntax = (FieldDeclarationSyntax)context.Node;
+        if (fieldDeclarationSyntax.AttributeLists
+            .SelectMany(l => l.Attributes)
+            .OfType<AttributeSyntax>()
+            .Any(s => s.Name.ToString() == AttributeName || s.Name.ToString() == AttributeShortName))
+        {
+            return fieldDeclarationSyntax.Parent as ClassDeclarationSyntax;
+        }
+
+        return default;
+    }
+
+    private static void Execute(Compilation compilation, ImmutableArray<ClassDeclarationSyntax?> classes, SourceProductionContext sourceProductionContext)
+    {
+        if (classes.IsDefaultOrEmpty)
+        {
+            return;
+        }
+
+        var maybeLanguageVersion = (compilation.SyntaxTrees.FirstOrDefault()?.Options as CSharpParseOptions)?.LanguageVersion;
+        if (!maybeLanguageVersion.HasValue)
+        {
+            return;
+        }
+
+        var languageVersion = maybeLanguageVersion.Value;
+        var distinctClasses = classes.Distinct();
+        foreach (var c in distinctClasses.OfType<ClassDeclarationSyntax>())
+        {
+            var className = c.Identifier.ToFullString();
+            if (!c.Modifiers.Any(m => m.ToString() == Partial))
+            {
+                Diagnostics.ClassNotPartial(className);
+                continue;
+            }
+
+            var originalNamespaceSyntax = GetParentOfType<BaseNamespaceDeclarationSyntax>(c);
+            if (originalNamespaceSyntax is null)
+            {
+                Diagnostics.ClassNotInNamespace(className);
+                continue;
+            }
+
+            if (!c.Members
+                .OfType<EventFieldDeclarationSyntax>()
+                .Any(eventField =>
+                    (eventField.Declaration.Variables.Any(variable => variable.Identifier.Text == PropertyChanged) &&
+                    eventField.Modifiers.Any(modifier => modifier.Text == Public) &&
+                    eventField.Declaration.Type.ToString() == PropertyChangedEventHandler) ||
+                    eventField.Declaration.Type.ToString() == NullablePropertyChangedEventHandler))
+            {
+                Diagnostics.ClassDoesNotImplementINotifyPropertyChanged(className);
+                continue;
+            }
+
+            var generatedClassBuilder = SyntaxBuilder.CreateClass(className)
+                .WithModifiers(string.Join(" ", c.Modifiers.Select(m => m.ToFullString())));
+            var compilationUnitBuilder = SyntaxBuilder.CreateCompilationUnit()
+                .WithNamespace(
+                    (languageVersion >= LanguageVersion.CSharp10 ?
+                    SyntaxBuilder.CreateFileScopedNamespace(originalNamespaceSyntax.Name.ToFullString()) :
+                    SyntaxBuilder.CreateNamespace(originalNamespaceSyntax.Name.ToFullString()))
+                    .WithClass(generatedClassBuilder));
+            
+            foreach (var field in c.DescendantNodes().OfType<FieldDeclarationSyntax>())
+            {
+                if (field.AttributeLists
+                    .SelectMany(l => l.Attributes)
+                    .OfType<AttributeSyntax>()
+                    .Any(s => s.Name.ToString() == AttributeName ||
+                        s.Name.ToString() == AttributeShortName) is false)
+                {
+                    continue;
+                }
+
+                var fieldName = field.Declaration.Variables.First().Identifier.ToFullString();
+                var propertyName = fieldName.TrimStart('_');
+                propertyName = $"{char.ToUpper(propertyName[0])}{propertyName.Substring(1)}";
+                var propertyBuilder = SyntaxBuilder.CreateProperty(field.Declaration.Type.ToFullString(), propertyName)
+                    .WithModifier(Public)
+                    .WithAccessor(SyntaxBuilder.CreateGetter()
+                        .WithBody($"return this.{fieldName};"))
+                    .WithAccessor(SyntaxBuilder.CreateSetter()
+                        .WithBody($"this.{fieldName} = value;\r\nthis.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof({propertyName})));"));
+                generatedClassBuilder.WithProperty(propertyBuilder);
+            }
+
+            var generatedSyntax = compilationUnitBuilder.Build();
+            if (originalNamespaceSyntax.Usings.Count != 0)
+            {
+                generatedSyntax = generatedSyntax.AddUsings([.. originalNamespaceSyntax.Usings]);
+            }
+            else
+            {
+                if (originalNamespaceSyntax.Parent is CompilationUnitSyntax compilationUnit)
+                {
+                    generatedSyntax = generatedSyntax.AddUsings([.. compilationUnit.Usings]);
+                }
+            }
+
+            var fileSource = $"#nullable enable\n{generatedSyntax.ToFullString()}\n#nullable disable";
+            sourceProductionContext.AddSource($"{className}.g", fileSource);
+        }
+    }
+
+    private static T? GetParentOfType<T>(SyntaxNode syntaxNode)
+    {
+        if (syntaxNode.Parent is null)
+        {
+            return default;
+        }
+
+        if (syntaxNode.Parent is T parentNode)
+        {
+            return parentNode;
+        }
+
+        return GetParentOfType<T>(syntaxNode.Parent);
+    }
+}
+#nullable disable

SystemExtensions.NetStandard.Generators/SystemExtensions.NetStandard.Generators.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <Authors>Alexandru Macocian</Authors>
+    <Description>Source generators extensions for netstandard2.0.</Description>
+    <Version>0.1.7</Version>
+    <LangVersion>latest</LangVersion>
+    <EnableNETAnalyzers>true</EnableNETAnalyzers>
+    <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
+    <IsRoslynComponent>true</IsRoslynComponent>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" PrivateAssets="all">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" PrivateAssets="all" />
+    <PackageReference Include="Sybil" Version="0.8.4" PrivateAssets="all" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- Package the generator in the analyzer directory of the nuget package -->
+    <None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
+    <None Include="$(OutputPath)\Sybil.dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
+  </ItemGroup>
+
+</Project>

SystemExtensions.NetStandard.Security.Tests/AesEncrypterTests.cs

@@ -0,0 +1,104 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Security.Encryption;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.Security.Tests;
+
+[TestClass]
+public class AesEncrypterTests
+{
+    private ISymmetricEncrypter symmetricEncrypter;
+    private string keyString;
+    private byte[] keyBytes;
+    private byte[] ivBytes;
+    private string ivString;
+    private string toEncryptString;
+    private byte[] toEncryptBytes;
+
+    [TestInitialize]
+    public void TestInitialize()
+    {
+        this.symmetricEncrypter = new AesEncrypter();
+        this.keyBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2 };
+        this.keyString = Convert.ToBase64String(this.keyBytes);
+        this.ivBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6 };
+        this.ivString = Convert.ToBase64String(this.ivBytes);
+        this.toEncryptBytes = Encoding.UTF8.GetBytes("toEncrypt");
+        this.toEncryptString = Convert.ToBase64String(this.toEncryptBytes);
+    }
+
+    [TestMethod]
+    public async Task EncryptDecryptStringWithStringKeyStringIv()
+    {
+        var encrypted = await this.symmetricEncrypter.Encrypt(this.keyString, this.ivString, this.toEncryptString).ConfigureAwait(false);
+        var decrypted = await this.symmetricEncrypter.Decrypt(this.keyString, this.ivString, encrypted).ConfigureAwait(false);
+
+        this.toEncryptString.Should().Be(decrypted);
+    }
+
+    [TestMethod]
+    public async Task EncryptDecryptStringWithByteKeyByteIv()
+    {
+        var encrypted = await this.symmetricEncrypter.Encrypt(this.keyBytes, this.ivBytes, this.toEncryptString).ConfigureAwait(false);
+        var decrypted = await this.symmetricEncrypter.Decrypt(this.keyBytes, this.ivBytes, encrypted).ConfigureAwait(false);
+
+        this.toEncryptString.Should().Be(decrypted);
+    }
+
+    [TestMethod]
+    public async Task EncryptDecryptByteWithStringKeyStringIv()
+    {
+        var encrypted = await this.symmetricEncrypter.Encrypt(this.keyString, this.ivString, this.toEncryptBytes).ConfigureAwait(false);
+        var decrypted = await this.symmetricEncrypter.Decrypt(this.keyString, this.ivString, encrypted).ConfigureAwait(false);
+
+        this.toEncryptBytes.Should().BeEquivalentTo(decrypted);
+    }
+
+    [TestMethod]
+    public async Task EncryptDecryptByteWithByteKeyByteIv()
+    {
+        var encrypted = await this.symmetricEncrypter.Encrypt(this.keyBytes, this.ivBytes, this.toEncryptBytes).ConfigureAwait(false);
+        var decrypted = await this.symmetricEncrypter.Decrypt(this.keyBytes, this.ivBytes, encrypted).ConfigureAwait(false);
+
+        this.toEncryptBytes.Should().BeEquivalentTo(decrypted);
+    }
+
+    [TestMethod]
+    public async Task EncryptDecryptStreamWithStringKeyStringIv()
+    {
+        var encrypted = await this.symmetricEncrypter.Encrypt(this.keyString, this.ivString, new MemoryStream(this.toEncryptBytes)).ConfigureAwait(false);
+        encrypted.Position = 0;
+        var decrypted = await this.symmetricEncrypter.Decrypt(this.keyString, this.ivString, encrypted).ConfigureAwait(false);
+
+        this.toEncryptBytes.Should().BeEquivalentTo(((MemoryStream)decrypted).ToArray());
+    }
+
+    [TestMethod]
+    public async Task EncryptDecryptStreamWithByteKeyByteIv()
+    {
+        var encrypted = await this.symmetricEncrypter.Encrypt(this.keyBytes, this.ivBytes, new MemoryStream(this.toEncryptBytes)).ConfigureAwait(false);
+        encrypted.Position = 0;
+        var decrypted = await this.symmetricEncrypter.Decrypt(this.keyBytes, this.ivBytes, encrypted).ConfigureAwait(false);
+
+        this.toEncryptBytes.Should().BeEquivalentTo(((MemoryStream)decrypted).ToArray());
+    }
+
+    [TestMethod]
+    public void GetEncryptionStreamReturnsCryptoStream()
+    {
+        var encryptionStream = this.symmetricEncrypter.GetEncryptionStream(this.keyBytes, this.ivBytes, new MemoryStream());
+        encryptionStream.Should().BeAssignableTo<CryptoStream>();
+    }
+
+    [TestMethod]
+    public void GetDecryptionStreamReturnsCryptoStream()
+    {
+        var encryptionStream = this.symmetricEncrypter.GetDecryptionStream(this.keyBytes, this.ivBytes, new MemoryStream());
+        encryptionStream.Should().BeAssignableTo<CryptoStream>();
+    }
+}

SystemExtensions.NetStandard.Security.Tests/CryptoRngProviderTests.cs

@@ -0,0 +1,54 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Linq;
+using System.Security.Rng;
+
+namespace SystemExtensions.NetStandard.Security.Tests;
+
+[TestClass]
+public class CryptoRngProviderTests
+{
+    private CryptoRngProvider cryptoRngProvider;
+
+    [TestInitialize]
+    public void TestInitialize()
+    {
+        this.cryptoRngProvider = new CryptoRngProvider();
+    }
+
+    [TestMethod]
+    public void GetBytes_ShouldSetValues()
+    {
+        var bytes = new byte[100];
+
+        this.cryptoRngProvider.GetBytes(bytes);
+
+        bytes.All(b => b == 0).Should().BeFalse();
+    }
+
+    [TestMethod]
+    public void GetNonZeroBytes_ShouldSetNonZeroValues()
+    {
+        var bytes = new byte[100];
+
+        this.cryptoRngProvider.GetNonZeroBytes(bytes);
+
+        bytes.All(b => b != 0).Should().BeTrue();
+    }
+
+    [TestMethod]
+    public void GetBytes_ShouldReturnBytes()
+    {
+        var bytes = this.cryptoRngProvider.GetBytes(10);
+
+        bytes.Length.Should().Be(10);
+    }
+
+    [TestMethod]
+    public void GetNonZeroBytes_ShouldReturnBytes()
+    {
+        var bytes = this.cryptoRngProvider.GetNonZeroBytes(10);
+
+        bytes.Length.Should().Be(10);
+    }
+}

SystemExtensions.NetStandard.Security.Tests/Rfc2898DeriveBytesPasswordHashingServiceTests.cs

@@ -0,0 +1,260 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Security.Hashing;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.Security.Tests;
+
+[TestClass]
+public sealed class Rfc2898DeriveBytesPasswordHashingServiceTests
+{
+    private const int TooShortHashLength = 31;
+    private const int DesiredHashLength = 32;
+    private const int Iterations = 10000;
+    private const int TooLittleIterations = 1000;
+
+    private readonly Rfc2898DeriveBytesPasswordHashingService rfc2898DeriveBytesPasswordHashingService = new();
+
+    private byte[] tooShortSaltBytes;
+    private string tooShortSaltString;
+    private byte[] incorrectSaltBytes;
+    private string incorrectSaltString;
+    private byte[] saltBytes;
+    private string saltString;
+    private byte[] passwordBytes;
+    private string passwordString;
+    private byte[] incorrectPasswordBytes;
+    private string incorrectPasswordString;
+
+    [TestInitialize]
+    public void TestInitialize()
+    {
+        this.tooShortSaltBytes = new byte[16];
+        this.tooShortSaltString = Convert.ToBase64String(this.tooShortSaltBytes);
+        this.saltBytes = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };
+        this.incorrectSaltBytes = new byte[32];
+        this.incorrectSaltString = Convert.ToBase64String(this.incorrectSaltBytes);
+        this.saltString = Convert.ToBase64String(this.saltBytes);
+        this.passwordBytes = new byte[] { 5, 1, 2, 34, 35, 123, 4, 23, 1, 235, 32, 234 };
+        this.passwordString = Convert.ToBase64String(this.passwordBytes);
+        this.incorrectPasswordBytes = new byte[] { 14, 123, 23, 4, 2, 1, 23, 25 };
+        this.incorrectPasswordString = Convert.ToBase64String(this.incorrectPasswordBytes);
+    }
+
+    [TestMethod]
+    public void PasswordNull_HashBytes_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(null, this.saltBytes, DesiredHashLength, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void PasswordNull_HashString_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(null, this.saltString, DesiredHashLength, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void SaltNull_HashBytes_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, null, DesiredHashLength, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void SaltNull_HashString_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, null, DesiredHashLength, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void HashLengthTooSmall_HashBytes_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, TooShortHashLength, Iterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public void HashLengthTooSmall_HashString_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, TooShortHashLength, Iterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public void TooLittleIterations_HashBytes_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, TooLittleIterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public void TooLittleIterations_HashString_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, TooLittleIterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public void TooShortSalt_HashBytes_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.tooShortSaltBytes, DesiredHashLength, TooLittleIterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public void TooShortSalt_HashString_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.tooShortSaltString, DesiredHashLength, TooLittleIterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public void PasswordNull_VerifyBytes_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(null, this.incorrectPasswordBytes, this.saltBytes, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void PasswordNull_VerifyString_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(null, this.incorrectPasswordString, this.saltString, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void HashNull_VerifyBytes_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordBytes, null, this.saltBytes, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void HashNull_VerifyString_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordString, null, this.saltString, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void SaltNull_VerifyBytes_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordBytes, this.incorrectPasswordBytes, null, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void SaltNull_VerifyString_Throws_ArgumentNullException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordString, this.incorrectPasswordString, null, Iterations));
+
+        action.Should().ThrowAsync<ArgumentNullException>();
+    }
+    [TestMethod]
+    public void TooLittleIterations_VerifyBytes_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordBytes, this.incorrectPasswordBytes, this.saltBytes, TooLittleIterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public void TooLittleIterations_VerifyString_Throws_InvalidOperationException()
+    {
+        var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordString, this.incorrectPasswordString, this.saltString, TooLittleIterations));
+
+        action.Should().ThrowAsync<InvalidOperationException>();
+    }
+    [TestMethod]
+    public async Task HashBytes_ReturnsHashedBytes()
+    {
+        var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+        hashedBytes.Should().NotBeNull();
+        hashedBytes.Should().HaveCount(DesiredHashLength);
+    }
+    [TestMethod]
+    public async Task HashString_ReturnsHashedString()
+    {
+        var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+        hashedString.Should().NotBeNull();
+        var hashedBytes = Convert.FromBase64String(hashedString);
+        hashedBytes.Should().HaveCount(DesiredHashLength);
+    }
+    [TestMethod]
+    public async Task VerifyBytes_CorrectPassword_ReturnsTrue()
+    {
+        var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.passwordBytes, this.saltBytes, Iterations);
+
+        result.Should().BeTrue();
+    }
+    [TestMethod]
+    public async Task VerifyString_CorrectPassword_ReturnsTrue()
+    {
+        var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.passwordString, this.saltString, Iterations);
+
+        result.Should().BeTrue();
+    }
+    [TestMethod]
+    public async Task VerifyBytes_IncorrectPassword_ReturnsFalse()
+    {
+        var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.incorrectPasswordBytes, this.saltBytes, Iterations);
+
+        result.Should().BeFalse();
+    }
+    [TestMethod]
+    public async Task VerifyString_IncorrectPassword_ReturnsFalse()
+    {
+        var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.incorrectPasswordString, this.saltString, Iterations);
+
+        result.Should().BeFalse();
+    }
+    [TestMethod]
+    public async Task VerifyBytes_IncorrectSalt_ReturnsFalse()
+    {
+        var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.passwordBytes, this.incorrectSaltBytes, Iterations);
+
+        result.Should().BeFalse();
+    }
+    [TestMethod]
+    public async Task VerifyString_IncorrectSalt_ReturnsFalse()
+    {
+        var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.passwordString, this.incorrectSaltString, Iterations);
+
+        result.Should().BeFalse();
+    }
+    [TestMethod]
+    public async Task VerifyBytes_IncorrectIterations_ReturnsFalse()
+    {
+        var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.passwordBytes, this.saltBytes, Iterations + 1);
+
+        result.Should().BeFalse();
+    }
+    [TestMethod]
+    public async Task VerifyString_IncorrectIterations_ReturnsFalse()
+    {
+        var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+        var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.passwordString, this.saltString, Iterations + 1);
+
+        result.Should().BeFalse();
+    }
+}

SystemExtensions.NetStandard.Security.Tests/SecureStringTests.cs

@@ -0,0 +1,121 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Security.Encryption;
+
+namespace SystemExtensions.NetStandard.Security.Tests;
+
+[TestClass]
+public class SecureStringTests
+{
+    [TestMethod]
+    public void SecureString_NewSecureString_ReturnsValue()
+    {
+        var str = new SecureString("hello");
+
+        str.Value.Should().Be("hello");
+    }
+
+    [TestMethod]
+    public void SecureStringEmpty_AreEqual()
+    {
+        var str = SecureString.Empty;
+        str.Should().Be(SecureString.Empty);
+    }
+
+    [TestMethod]
+    public void SecureStringEmpty_Equals_StringEmpty()
+    {
+        var ss = SecureString.Empty;
+        var s = string.Empty;
+
+        ss.Should().Be(s);
+    }
+
+    [TestMethod]
+    public void SecureString_Equals_OtherSecureString()
+    {
+        var ss1 = new SecureString("Hello");
+        var ss2 = new SecureString("Hello");
+
+        ss1.Equals(ss2).Should().BeTrue();
+    }
+
+    [TestMethod]
+    [DataRow("hello", "hello", true)]
+    [DataRow("hello", "henlo", false)]
+    public void SecureString_EqualOperator_OtherSecureString(string str1, string str2, bool isEqual)
+    {
+        var ss1 = new SecureString(str1);
+        var ss2 = new SecureString(str2);
+
+        (ss1 == ss2).Should().Be(isEqual);
+    }
+
+    [TestMethod]
+    [DataRow("hello", "hello", false)]
+    [DataRow("hello", "henlo", true)]
+    public void SecureString_DifferentOperator_OtherSecureString(string str1, string str2, bool isDifferent)
+    {
+        var ss1 = new SecureString(str1);
+        var ss2 = new SecureString(str2);
+
+        (ss1 != ss2).Should().Be(isDifferent);
+    }
+
+    [TestMethod]
+    [DataRow("hello", "hello", true)]
+    [DataRow("hello", "henlo", false)]
+    public void SecureString_EqualOperator_String(string str1, string str2, bool isEqual)
+    {
+        var ss1 = new SecureString(str1);
+
+        (ss1 == str2).Should().Be(isEqual);
+    }
+
+    [TestMethod]
+    [DataRow("hello", "hello", false)]
+    [DataRow("hello", "henlo", true)]
+    public void SecureString_DifferentOperator_String(string str1, string str2, bool isDifferent)
+    {
+        var ss1 = new SecureString(str1);
+
+        (ss1 != str2).Should().Be(isDifferent);
+    }
+
+    [TestMethod]
+    public void SecureString_PlusOperator_SecureString()
+    {
+        var ss1 = new SecureString("Hello ");
+        var ss2 = new SecureString("World");
+
+        (ss1 + ss2).Should().Be("Hello World");
+    }
+
+    [TestMethod]
+    public void SecureString_PlusOperator_String()
+    {
+        var ss1 = new SecureString("Hello ");
+        var ss2 = "World";
+
+        (ss1 + ss2).Should().Be("Hello World");
+    }
+
+    [TestMethod]
+    public void SecureString_PlusOperator_Char()
+    {
+        var ss1 = new SecureString("Hello ");
+        var c = 'W';
+
+        (ss1 + c).Should().Be("Hello W");
+    }
+
+    [TestMethod]
+    public void SecureString_WithOptionalEntropy_Matches()
+    {
+        SecureString.AddOptionalEntropy(new byte[] { 10, 20, 25, 34, 56, 12, 10, 81, 200, 155, 123, 144, 123, 192, 122, 1 });
+        var ss1 = new SecureString("Hello");
+        var ss2 = new SecureString("Hello");
+
+        ss1.Should().Be(ss2);
+    }
+}

SystemExtensions.NetStandard.Security.Tests/Sha256HashingServiceTests.cs

@@ -0,0 +1,47 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.IO;
+using System.Security.Hashing;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.Security.Tests;
+
+[TestClass]
+public sealed class Sha256HashingServiceTests
+{
+    private readonly IHashingService hashingService = new Sha256HashingService();
+    private string toHashtString;
+    private byte[] toHashtBytes;
+    private Stream toHashStream;
+
+    [TestInitialize]
+    public void TestInitialize()
+    {
+        this.toHashtBytes = Encoding.UTF8.GetBytes("toEncrypt");
+        this.toHashtString = Convert.ToBase64String(this.toHashtBytes);
+        this.toHashStream = new MemoryStream(this.toHashtBytes);
+    }
+
+    [TestMethod]
+    public async Task HashString()
+    {
+        var hash = await this.hashingService.Hash(this.toHashtString).ConfigureAwait(false);
+        hash.Should().BeOfType<string>();
+    }
+
+    [TestMethod]
+    public async Task HashBytes()
+    {
+        var hash = await this.hashingService.Hash(this.toHashtBytes).ConfigureAwait(false);
+        hash.Should().BeOfType<byte[]>();
+    }
+
+    [TestMethod]
+    public async Task HashStream()
+    {
+        var hash = await this.hashingService.Hash(this.toHashStream).ConfigureAwait(false);
+        hash.Should().BeAssignableTo<Stream>();
+    }
+}

SystemExtensions.NetStandard.Security.Tests/SystemExtensions.NetStandard.Security.Tests.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.2" />
+    <PackageReference Include="coverlet.collector" Version="6.0.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SystemExtensions.NetStandard.Security\SystemExtensions.NetStandard.Security.csproj" />
+  </ItemGroup>
+
+</Project>

SystemExtensions.NetStandard.Security/Encryption/AesEncrypter.cs

@@ -0,0 +1,226 @@
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Threading.Tasks;
+using System.Security.Utilities;
+
+namespace System.Security.Encryption;
+
+public sealed class AesEncrypter : ISymmetricEncrypter, IDisposable
+{
+    private readonly Aes aes;
+
+    public AesEncrypter()
+    {
+        this.aes = Aes.Create();
+    }
+
+    public AesEncrypter(Aes aes)
+    {
+        this.aes = aes;
+    }
+
+    public async Task<string> Decrypt(string key, string iv, string value)
+    {
+        using var valueStream = BytesToStream(StringToBytes(value));
+        using var decryptedStream = await this.DecryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+        return StreamToString(decryptedStream);
+    }
+
+    public async Task<string> Decrypt(byte[] key, byte[] iv, string value)
+    {
+        using var valueStream = BytesToStream(StringToBytes(value));
+        using var decryptedStream = await this.DecryptInternal(key, iv, valueStream).ConfigureAwait(false);
+        return StreamToString(decryptedStream);
+    }
+
+    public async Task<byte[]> Decrypt(string key, string iv, byte[] value)
+    {
+        using var valueStream = BytesToStream(value);
+        using var decryptedStream = await this.DecryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+        return StreamToBytes(decryptedStream);
+    }
+
+    public async Task<byte[]> Decrypt(byte[] key, byte[] iv, byte[] value)
+    {
+        using var valueStream = BytesToStream(value);
+        using var decryptedStream = await this.DecryptInternal(key, iv, valueStream).ConfigureAwait(false);
+        return StreamToBytes(decryptedStream);
+    }
+
+    public async Task<Stream> Decrypt(string key, string iv, Stream value)
+    {
+        return await this.DecryptInternal(StringToBytes(key), StringToBytes(iv), value).ConfigureAwait(false);
+    }
+
+    public async Task<Stream> Decrypt(byte[] key, byte[] iv, Stream value)
+    {
+        return await this.DecryptInternal(key, iv, value).ConfigureAwait(false);
+    }
+
+    public async Task<string> Encrypt(string key, string iv, string value)
+    {
+        using var valueStream = BytesToStream(StringToBytes(value));
+        using var encryptedStream = await this.EncryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+        return StreamToString(encryptedStream);
+    }
+
+    public async Task<string> Encrypt(byte[] key, byte[] iv, string value)
+    {
+        using var valueStream = BytesToStream(StringToBytes(value));
+        using var encryptedStream = await this.EncryptInternal(key, iv, valueStream).ConfigureAwait(false);
+        return StreamToString(encryptedStream);
+    }
+
+    public async Task<byte[]> Encrypt(string key, string iv, byte[] value)
+    {
+        using var valueStream = BytesToStream(value);
+        using var encryptedStream = await this.EncryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+        return StreamToBytes(encryptedStream);
+    }
+
+    public async Task<byte[]> Encrypt(byte[] key, byte[] iv, byte[] value)
+    {
+        using var valueStream = BytesToStream(value);
+        using var encryptedStream = await this.EncryptInternal(key, iv, valueStream).ConfigureAwait(false);
+        return StreamToBytes(encryptedStream);
+    }
+
+    public async Task<Stream> Encrypt(string key, string iv, Stream value)
+    {
+        return value is null
+            ? throw new ArgumentNullException(nameof(value))
+            : await this.EncryptInternal(StringToBytes(key), StringToBytes(iv), value).ConfigureAwait(false);
+    }
+
+    public async Task<Stream> Encrypt(byte[] key, byte[] iv, Stream value)
+    {
+        return value is null
+            ? throw new ArgumentNullException(nameof(value))
+            : await this.EncryptInternal(key, iv, value).ConfigureAwait(false);
+    }
+
+    public Stream GetEncryptionStream(string key, string iv, Stream outStream)
+    {
+        return this.GetEncryptionStreamInternal(StringToBytes(key), StringToBytes(iv), outStream);
+    }
+
+    public Stream GetEncryptionStream(byte[] key, byte[] iv, Stream outStream)
+    {
+        return this.GetEncryptionStreamInternal(key, iv, outStream);
+    }
+
+    public Stream GetDecryptionStream(string key, string iv, Stream inStream)
+    {
+        return this.GetDecryptionStreamInternal(StringToBytes(key), StringToBytes(iv), inStream);
+    }
+
+    public Stream GetDecryptionStream(byte[] key, byte[] iv, Stream inStream)
+    {
+        return this.GetDecryptionStreamInternal(key, iv, inStream);
+    }
+
+    private async Task<Stream> EncryptInternal(byte[] key, byte[] iv, Stream toEncryptStream)
+    {
+        if (key.Length < 32)
+        {
+            throw new ArgumentException($"{nameof(key)} must be at least 32 bytes");
+        }
+
+        if (iv.Length < 16)
+        {
+            throw new ArgumentException($"{nameof(iv)} must be at least 16 bytes");
+        }
+
+        key = key.Take(32).ToArray();
+        iv = iv.Take(16).ToArray();
+
+
+        var encryptedMemoryStream = new MemoryStream();
+        using var cryptoStream = this.GetEncryptionStreamInternal(key, iv, encryptedMemoryStream);
+        await toEncryptStream.CopyToAsync(cryptoStream).ConfigureAwait(false);
+        if (!cryptoStream.HasFlushedFinalBlock)
+        {
+            cryptoStream.FlushFinalBlock();
+        }
+
+        encryptedMemoryStream.Position = 0;
+        return encryptedMemoryStream;
+    }
+
+    private async Task<Stream> DecryptInternal(byte[] key, byte[] iv, Stream toDecryptStream)
+    {
+        if (key.Length < 32)
+        {
+            throw new ArgumentException($"{nameof(key)} must be at least 32 bytes");
+        }
+
+        if (iv.Length < 16)
+        {
+            throw new ArgumentException($"{nameof(iv)} must be at least 16 bytes");
+        }
+
+        key = key.Take(32).ToArray();
+        iv = iv.Take(16).ToArray();
+
+
+        var decryptedMemoryStream = new MemoryStream();
+        using var cryptoStream = this.GetDecryptionStreamInternal(key, iv, toDecryptStream);
+        await cryptoStream.CopyToAsync(decryptedMemoryStream).ConfigureAwait(false);
+        if (!cryptoStream.HasFlushedFinalBlock)
+        {
+            cryptoStream.FlushFinalBlock();
+        }
+
+        decryptedMemoryStream.Position = 0;
+        return decryptedMemoryStream;
+    }
+
+    private CryptoStream GetEncryptionStreamInternal(byte[] key, byte[] iv, Stream encryptedStream)
+    {
+        var crypto = this.aes.CreateEncryptor(key, iv);
+        var cryptoStream = new NotClosingCryptoStream(encryptedStream, crypto, CryptoStreamMode.Write);
+        return cryptoStream;
+    }
+
+    private CryptoStream GetDecryptionStreamInternal(byte[] key, byte[] iv, Stream encryptedStream)
+    {
+        var crypto = this.aes.CreateDecryptor(key, iv);
+        var cryptoStream = new NotClosingCryptoStream(encryptedStream, crypto, CryptoStreamMode.Read);
+        return cryptoStream;
+    }
+
+    private static byte[] StreamToBytes(Stream value)
+    {
+        value.Position = 0;
+        var buffer = new byte[1024];
+        using var ms = new MemoryStream();
+        var read = -1;
+        do
+        {
+            read = value.Read(buffer, 0, buffer.Length);
+            ms.Write(buffer, 0, read);
+        } while (read > 0);
+        return ms.ToArray();
+    }
+
+    private static string StreamToString(Stream value)
+    {
+        return Convert.ToBase64String(StreamToBytes(value));
+    }
+
+    private static byte[] StringToBytes(string value)
+    {
+        return Convert.FromBase64String(value);
+    }
+
+    private static Stream BytesToStream(byte[] value)
+    {
+        return new MemoryStream(value);
+    }
+
+    public void Dispose()
+    {
+        this.aes.Dispose();
+    }
+}

SystemExtensions.NetStandard.Security/Encryption/ISymmetricEncrypter.cs

@@ -0,0 +1,24 @@
+using System.IO;
+using System.Threading.Tasks;
+
+namespace System.Security.Encryption;
+
+public interface ISymmetricEncrypter
+{
+    Stream GetEncryptionStream(string key, string iv, Stream outStream);
+    Stream GetEncryptionStream(byte[] key, byte[] iv, Stream outStream);
+    Stream GetDecryptionStream(string key, string iv, Stream inStream);
+    Stream GetDecryptionStream(byte[] key, byte[] iv, Stream inStream);
+    Task<string> Encrypt(string key, string iv, string value);
+    Task<string> Encrypt(byte[] key, byte[] iv, string value);
+    Task<byte[]> Encrypt(string key, string iv, byte[] value);
+    Task<byte[]> Encrypt(byte[] key, byte[] iv, byte[] value);
+    Task<Stream> Encrypt(string key, string iv, Stream value);
+    Task<Stream> Encrypt(byte[] key, byte[] iv, Stream value);
+    Task<string> Decrypt(string key, string iv, string value);
+    Task<string> Decrypt(byte[] key, byte[] iv, string value);
+    Task<byte[]> Decrypt(string key, string iv, byte[] value);
+    Task<byte[]> Decrypt(byte[] key, byte[] iv, byte[] value);
+    Task<Stream> Decrypt(string key, string iv, Stream value);
+    Task<Stream> Decrypt(byte[] key, byte[] iv, Stream value);
+}

SystemExtensions.NetStandard.Security/Encryption/SecureString.cs

@@ -0,0 +1,108 @@
+using System.Security.Cryptography;
+using System.Text;
+
+namespace System.Security.Encryption;
+
+public sealed class SecureString
+{
+    private static byte[] optionalEntropy;
+    private byte[] encryptedValue;
+
+    public string Value {
+        get => this.encryptedValue is not null ? Encoding.UTF8.GetString(ProtectedData.Unprotect(this.encryptedValue, optionalEntropy, DataProtectionScope.CurrentUser)) : string.Empty;
+        private set => this.encryptedValue = value is not null
+            ? ProtectedData.Protect(Encoding.UTF8.GetBytes(value), optionalEntropy, DataProtectionScope.CurrentUser)
+            : null;
+    }
+
+    public SecureString(string value)
+    {
+        this.Value = value;
+    }
+
+    public override bool Equals(object obj)
+    {
+        if (obj is string)
+        {
+            return this == (obj as string);
+        }
+        else if (obj is SecureString)
+        {
+            return this == (obj as SecureString);
+        }
+        else
+        {
+            return base.Equals(obj);
+        }
+    }
+    public override int GetHashCode()
+    {
+        return this.Value.GetHashCode();
+    }
+    public override string ToString()
+    {
+        return this.Value;
+    }
+
+    public static readonly SecureString Empty = new(null);
+    public static implicit operator string(SecureString ss) => ss is null ? string.Empty : ss.Value;
+    public static implicit operator SecureString(string s) => new(s);
+    public static SecureString operator +(SecureString ss1, SecureString ss2)
+    {
+        if (ss1 is null)
+        {
+            throw new ArgumentNullException(nameof(ss1));
+        }
+
+        if (ss2 is null)
+        {
+            throw new ArgumentNullException(nameof(ss2));
+        }
+
+        return new SecureString(ss1.Value + ss2.Value);
+    }
+    public static SecureString operator +(SecureString ss1, string s2)
+    {
+        if (ss1 is null)
+        {
+            throw new ArgumentNullException(nameof(ss1));
+        }
+
+        return new SecureString(ss1.Value + s2);
+    }
+    public static SecureString operator +(SecureString ss1, char c)
+    {
+        if (ss1 is null)
+        {
+            throw new ArgumentNullException(nameof(ss1));
+        }
+
+        return new SecureString(ss1.Value + c);
+    }
+    public static bool operator ==(SecureString ss1, SecureString ss2)
+    {
+        if (ss1 is null && ss2 is null)
+        {
+            return true;
+        }
+
+        return ss1?.Value == ss2?.Value;
+    }
+    public static bool operator !=(SecureString ss1, SecureString ss2)
+    {
+        return !(ss1 == ss2);
+    }
+    public static bool operator ==(SecureString ss1, string s2)
+    {
+        return ss1?.Value == s2;
+    }
+    public static bool operator !=(SecureString ss1, string s2)
+    {
+        return !(ss1?.Value == s2);
+    }
+
+    public static void AddOptionalEntropy(byte[] entropy)
+    {
+        optionalEntropy = entropy;
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/BaseHMACService.cs

@@ -0,0 +1,64 @@
+using System.IO;
+using System.Security.Cryptography;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing;
+public abstract class BaseHMACService<T> : IHMACService
+    where T : HMAC
+{
+    protected abstract T GetHashAlgorithm(byte[] key);
+
+    public async Task<string> Hash(string key, string raw)
+    {
+        using var rawStream = BytesToStream(StringToBytes(raw));
+        var keyBytes = StringToBytes(key);
+        using var hashedStream = await this.HashInternal(keyBytes, rawStream).ConfigureAwait(false);
+        return StreamToString(hashedStream);
+    }
+    public async Task<byte[]> Hash(byte[] key, byte[] raw)
+    {
+        using var rawStream = BytesToStream(raw);
+        using var hashedStream = await this.HashInternal(key, rawStream).ConfigureAwait(false);
+        return StreamToBytes(hashedStream);
+    }
+    public async Task<Stream> Hash(byte[] key, Stream raw)
+    {
+        return await this.HashInternal(key, raw);
+    }
+
+    private static byte[] StreamToBytes(Stream value)
+    {
+        value.Position = 0;
+        var buffer = new byte[1024];
+        using var ms = new MemoryStream();
+        var read = -1;
+        do
+        {
+            read = value.Read(buffer, 0, buffer.Length);
+            ms.Write(buffer, 0, read);
+        } while (read > 0);
+        return ms.ToArray();
+    }
+    private static string StreamToString(Stream value)
+    {
+        return Convert.ToBase64String(StreamToBytes(value));
+    }
+    private static byte[] StringToBytes(string value)
+    {
+        return Convert.FromBase64String(value);
+    }
+    private static Stream BytesToStream(byte[] value)
+    {
+        return new MemoryStream(value);
+    }
+    private async Task<Stream> HashInternal(byte[] key, Stream raw)
+    {
+        if (raw is null)
+        {
+            throw new ArgumentNullException(nameof(raw));
+        }
+
+        using var algo = this.GetHashAlgorithm(key);
+        return await Task.Run(() => new MemoryStream(algo.ComputeHash(raw)));
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/BaseHashingService.cs

@@ -0,0 +1,63 @@
+using System.IO;
+using System.Security.Cryptography;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing;
+public abstract class BaseHashingService<T>
+    where T : HashAlgorithm
+{
+    protected abstract T GetHashAlgorithm();
+
+    public async Task<string> Hash(string raw)
+    {
+        using var rawStream = BytesToStream(StringToBytes(raw));
+        using var hashedStream = await this.HashInternal(rawStream).ConfigureAwait(false);
+        return StreamToString(hashedStream);
+    }
+    public async Task<byte[]> Hash(byte[] raw)
+    {
+        using var rawStream = BytesToStream(raw);
+        using var hashedStream = await this.HashInternal(rawStream).ConfigureAwait(false);
+        return StreamToBytes(hashedStream);
+    }
+    public async Task<Stream> Hash(Stream raw)
+    {
+        return await this.HashInternal(raw);
+    }
+
+    private static byte[] StreamToBytes(Stream value)
+    {
+        value.Position = 0;
+        var buffer = new byte[1024];
+        using var ms = new MemoryStream();
+        var read = -1;
+        do
+        {
+            read = value.Read(buffer, 0, buffer.Length);
+            ms.Write(buffer, 0, read);
+        } while (read > 0);
+        return ms.ToArray();
+    }
+    private static string StreamToString(Stream value)
+    {
+        return Convert.ToBase64String(StreamToBytes(value));
+    }
+    private static byte[] StringToBytes(string value)
+    {
+        return Convert.FromBase64String(value);
+    }
+    private static Stream BytesToStream(byte[] value)
+    {
+        return new MemoryStream(value);
+    }
+    private async Task<Stream> HashInternal(Stream raw)
+    {
+        if (raw is null)
+        {
+            throw new ArgumentNullException(nameof(raw));
+        }
+
+        using var algo = this.GetHashAlgorithm();
+        return await Task.Run(() => new MemoryStream(algo.ComputeHash(raw)));
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/HMACMD5Service.cs

@@ -0,0 +1,10 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class HMACMD5Service : BaseHMACService<HMACMD5>, IHMACMD5Service
+{
+    protected override HMACMD5 GetHashAlgorithm(byte[] key)
+    {
+        return new HMACMD5(key);
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/HMACSha1Service.cs

@@ -0,0 +1,10 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class HMACSha1Service : BaseHMACService<HMACSHA1>, IHMACSha1Service
+{
+    protected override HMACSHA1 GetHashAlgorithm(byte[] key)
+    {
+        return new HMACSHA1(key);
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/HMACSha256Service.cs

@@ -0,0 +1,10 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class HMACSha256Service : BaseHMACService<HMACSHA256>, IHMACSha256Service
+{
+    protected override HMACSHA256 GetHashAlgorithm(byte[] key)
+    {
+        return new HMACSHA256(key);
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/HMACSha384Service.cs

@@ -0,0 +1,10 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class HMACSha384Service : BaseHMACService<HMACSHA384>, IHMACSha384Service
+{
+    protected override HMACSHA384 GetHashAlgorithm(byte[] key)
+    {
+        return new HMACSHA384(key);
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/HMACSha512Service.cs

@@ -0,0 +1,10 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class HMACSha512Service : BaseHMACService<HMACSHA512>, IHMACSha512Service
+{
+    protected override HMACSHA512 GetHashAlgorithm(byte[] key)
+    {
+        return new HMACSHA512(key);
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/IHMACMD5Service.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface IHMACMD5Service : IHMACService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/IHMACService.cs

@@ -0,0 +1,10 @@
+using System.IO;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing;
+public interface IHMACService
+{
+    Task<string> Hash(string key, string raw);
+    Task<byte[]> Hash(byte[] key, byte[] raw);
+    Task<Stream> Hash(byte[] key, Stream raw);
+}

SystemExtensions.NetStandard.Security/Hashing/IHMACSha1Service.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface IHMACSha1Service : IHMACService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/IHMACSha256Service.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface IHMACSha256Service : IHMACService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/IHMACSha384Service.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface IHMACSha384Service : IHMACService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/IHMACSha512Service.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface IHMACSha512Service : IHMACService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/IHashingService.cs

@@ -0,0 +1,11 @@
+using System.IO;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing;
+
+public interface IHashingService
+{
+    Task<string> Hash(string raw);
+    Task<byte[]> Hash(byte[] raw);
+    Task<Stream> Hash(Stream raw);
+}

SystemExtensions.NetStandard.Security/Hashing/IMD5HashingService.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface IMD5HashingService : IHashingService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/IPasswordHashingService.cs

@@ -0,0 +1,46 @@
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing;
+
+public interface IPasswordHashingService
+{
+    /// <summary>
+    /// Hash provided raw password and return the hashed value.
+    /// </summary>
+    /// <param name="raw">Base64 encoded password.</param>
+    /// <param name="salt">Base64 encoded salt to be used for hashing.</param>
+    /// <param name="length">Length of the resulting hash.</param>
+    /// <param name="iterations">Number of hashing iterations to be performed.</param>
+    /// <remarks>
+    /// The length of the hash will vary due to the base64 encoding of the resulting hash.
+    /// </remarks>
+    /// <returns>Base64 encoded hashed password.</returns>
+    Task<string> Hash(string raw, string salt, int length, int iterations);
+    /// <summary>
+    /// Hash provided raw password and return the hashed value.
+    /// </summary>
+    /// <param name="raw">Password to be hashed.</param>
+    /// <param name="salt">Salt to be used for hashing.</param>
+    /// <param name="length">Length of the resulting hash.</param>
+    /// <param name="iterations">Number of hashing iterations to be performed.</param>
+    /// <returns>Hashed password.</returns>
+    Task<byte[]> Hash(byte[] raw, byte[] salt, int length, int iterations);
+    /// <summary>
+    /// Verify provided password against a hashed password.
+    /// </summary>
+    /// <param name="hash">Base64 encoding of the previously hashed password.</param>
+    /// <param name="password">Base64 encoding of the password to be verified.</param>
+    /// <param name="salt">Salt used to hash the previous password.</param>
+    /// <param name="iterations">Number of iterations used to hash the previous password.</param>
+    /// <returns>Returns true if password matches the previously hashed password. Otherwise returns false.</returns>
+    Task<bool> VerifyPassword(string hash, string password, string salt, int iterations);
+    /// <summary>
+    /// Verify provided password against a hashed password.
+    /// </summary>
+    /// <param name="hash">Previously hashed password.</param>
+    /// <param name="password">Password to be verified.</param>
+    /// <param name="salt">Salt used to hash the previous password.</param>
+    /// <param name="iterations">Number of iterations used to hash the previous password.</param>
+    /// <returns>Returns true if password matches the previously hashed password. Otherwise returns false.</returns>
+    Task<bool> VerifyPassword(byte[] hash, byte[] password, byte[] salt, int iterations);
+}

SystemExtensions.NetStandard.Security/Hashing/ISha1HashingService.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface ISha1HashingService : IHashingService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/ISha256HashingService.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface ISha256HashingService : IHashingService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/ISha384HashingService.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface ISha384HashingService : IHashingService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/ISha512HashingService.cs

@@ -0,0 +1,4 @@
+namespace System.Security.Hashing;
+public interface ISha512HashingService : IHashingService
+{
+}

SystemExtensions.NetStandard.Security/Hashing/MD5HashingService.cs

@@ -0,0 +1,10 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class MD5HashingService : BaseHashingService<MD5>, IMD5HashingService
+{
+    protected override MD5 GetHashAlgorithm()
+    {
+        return MD5.Create();
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/Rfc2898DeriveBytesPasswordHashingService.cs

@@ -0,0 +1,100 @@
+using System.Security.Cryptography;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing;
+
+public sealed class Rfc2898DeriveBytesPasswordHashingService : IPasswordHashingService
+{
+    private const int MinimumIterations = 10000;
+    private const int MinimumHashLength = 32;
+
+    public Rfc2898DeriveBytesPasswordHashingService()
+    {
+    }
+
+    public async Task<string> Hash(string raw, string salt, int length, int iterations)
+    {
+        this.ValidateHashArguments(raw, salt, length, iterations);
+
+        var rawBytes = Convert.FromBase64String(raw);
+        var saltBytes = Convert.FromBase64String(salt);
+        var hashBytes = await this.HashInternal(rawBytes, saltBytes, length, iterations);
+        return Convert.ToBase64String(hashBytes);
+    }
+    public Task<byte[]> Hash(byte[] raw, byte[] salt, int length, int iterations)
+    {
+        this.ValidateHashArguments(raw, salt, length, iterations);
+
+        return this.HashInternal(raw, salt, length, iterations);
+    }
+    public Task<bool> VerifyPassword(string hash, string password, string salt, int iterations)
+    {
+        this.ValidateVerifyArguments(hash, password, salt, iterations);
+        var hashBytes = Convert.FromBase64String(hash);
+        var saltBytes = Convert.FromBase64String(salt);
+        var passwordBytes = Convert.FromBase64String(password);
+        return this.VerifyPasswordInternal(hashBytes, passwordBytes, saltBytes, iterations);
+    }
+    public Task<bool> VerifyPassword(byte[] hash, byte[] password, byte[] salt, int iterations)
+    {
+        this.ValidateVerifyArguments(hash, password, salt, iterations);
+        return this.VerifyPasswordInternal(hash, password, salt, iterations);
+    }
+
+    private void ValidateHashArguments(object raw, object salt, int length, int iterations)
+    {
+        _ = raw ?? throw new ArgumentNullException(nameof(raw));
+        _ = salt ?? throw new ArgumentNullException(nameof(salt));
+
+        if (iterations < MinimumIterations)
+        {
+            throw new InvalidOperationException($"Unable to perform secure hash. Iteration count must be over {MinimumIterations}");
+        }
+
+        if (length < MinimumHashLength)
+        {
+            throw new InvalidOperationException($"Unable to perform secure hash. Hash length must be over {MinimumHashLength}");
+        }
+    }
+    private void ValidateVerifyArguments(object hash, object password, object salt, int iterations)
+    {
+        _ = hash ?? throw new ArgumentNullException(nameof(hash));
+        _ = salt ?? throw new ArgumentNullException(nameof(salt));
+        _ = password ?? throw new ArgumentNullException(nameof(password));
+
+        if (iterations < MinimumIterations)
+        {
+            throw new InvalidOperationException($"Unable to verify hash. Iteration count must be over {MinimumIterations}");
+        }
+    }
+    private Task<byte[]> HashInternal(byte[] raw, byte[] salt, int length, int iterations)
+    {
+        using var pbkdf2 = new Rfc2898DeriveBytes(raw, salt, iterations);
+        var hash = pbkdf2.GetBytes(length);
+        return Task.FromResult(hash);
+    }
+    private Task<bool> VerifyPasswordInternal(byte[] hash, byte[] password, byte[] salt, int iterations)
+    {
+        using var pbkdf2 = new Rfc2898DeriveBytes(password, salt, iterations);
+        var hashToVerify = pbkdf2.GetBytes(hash.Length);
+        var lengthToVerify = Math.Max(hash.Length, hashToVerify.Length);
+        var match = true;
+        if (lengthToVerify <= 0)
+        {
+            return Task.FromResult(false);
+        }
+
+        for(var i = 0; i < lengthToVerify; i++)
+        {
+            if (i < hash.Length && i < hashToVerify.Length)
+            {
+                if (hashToVerify[i].Equals(hash[i]) is false)
+                {
+                    match = false;
+                }
+            }
+        }
+
+        return Task.FromResult(match && hash.Length.Equals(hashToVerify.Length));
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/Sha1HashingService.cs

@@ -0,0 +1,7 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class Sha1HashingService : BaseHashingService<SHA1>, ISha1HashingService
+{
+    protected override SHA1 GetHashAlgorithm() => SHA1.Create();
+}

SystemExtensions.NetStandard.Security/Hashing/Sha256HashingService.cs

@@ -0,0 +1,8 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+
+public sealed class Sha256HashingService : BaseHashingService<SHA256>, ISha256HashingService
+{
+    protected override SHA256 GetHashAlgorithm() => SHA256.Create();
+}

SystemExtensions.NetStandard.Security/Hashing/Sha384HashingService.cs

@@ -0,0 +1,10 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class Sha384HashingService : BaseHashingService<SHA384>, ISha384HashingService
+{
+    protected override SHA384 GetHashAlgorithm()
+    {
+        return SHA384.Create();
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/Sha512HashingService.cs

@@ -0,0 +1,7 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Hashing;
+public sealed class Sha512HashingService : BaseHashingService<SHA512>, ISha512HashingService
+{
+    protected override SHA512 GetHashAlgorithm() => SHA512.Create();
+}

SystemExtensions.NetStandard.Security/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 Macocian Alexandru Victor
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

SystemExtensions.NetStandard.Security/Rng/CryptoRngProvider.cs

@@ -0,0 +1,58 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Rng;
+
+public sealed class CryptoRngProvider : ICryptoRngProvider, IDisposable
+{
+    private readonly RNGCryptoServiceProvider rngProvider;
+    private bool disposedValue;
+
+    public CryptoRngProvider()
+    {
+        this.rngProvider = new RNGCryptoServiceProvider();
+    }
+    public CryptoRngProvider(CspParameters cspParams)
+    {
+        this.rngProvider = new RNGCryptoServiceProvider(cspParams);
+    }
+
+
+    public void GetBytes(byte[] data)
+    {
+        this.rngProvider.GetBytes(data);
+    }
+    public void GetNonZeroBytes(byte[] data)
+    {
+        this.rngProvider.GetNonZeroBytes(data);
+    }
+    public byte[] GetBytes(int byteCount)
+    {
+        var bytes = new byte[byteCount];
+        this.GetBytes(bytes);
+        return bytes;
+    }
+    public byte[] GetNonZeroBytes(int byteCount)
+    {
+        var bytes = new byte[byteCount];
+        this.GetNonZeroBytes(bytes);
+        return bytes;
+    }
+
+    private void Dispose(bool disposing)
+    {
+        if (!this.disposedValue)
+        {
+            if (disposing)
+            {
+                this.rngProvider.Dispose();
+            }
+
+            this.disposedValue = true;
+        }
+    }
+    public void Dispose()
+    {
+        this.Dispose(disposing: true);
+        GC.SuppressFinalize(this);
+    }
+}

SystemExtensions.NetStandard.Security/Rng/ICryptoRngProvider.cs

@@ -0,0 +1,27 @@
+namespace System.Security.Rng;
+
+public interface ICryptoRngProvider
+{
+    /// <summary>
+    /// Populate provided array of bytes with cryptographically secure random bytes.
+    /// </summary>
+    /// <param name="data">Array of bytes to be populated.</param>
+    public void GetBytes(byte[] data);
+    /// <summary>
+    /// Return an array of cryptographically secure random bytes.
+    /// </summary>
+    /// <param name="byteCount">Length of the returned array.</param>
+    /// <returns>Array containing cryptographically secure random values.</returns>
+    public byte[] GetBytes(int byteCount);
+    /// <summary>
+    /// Populate provided array of bytes with cryptographically secure random non-zero bytes.
+    /// </summary>
+    /// <param name="data">Array of bytes to be populated.</param>
+    public void GetNonZeroBytes(byte[] data);
+    /// <summary>
+    /// Return an array of cryptographically secure random non-zero bytes.
+    /// </summary>
+    /// <param name="byteCount">Length of the returned array.</param>
+    /// <returns>Array containing cryptographically secure random non-zero values.</returns>
+    public byte[] GetNonZeroBytes(int byteCount);
+}

SystemExtensions.NetStandard.Security/SystemExtensions.NetStandard.Security.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <LangVersion>latest</LangVersion>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <PackageLicenseFile>LICENSE</PackageLicenseFile>
+    <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
+    <RootNamespace>System</RootNamespace>
+    <Version>1.3.1</Version>
+    <Authors>Alexandru Macocian</Authors>
+    <RepositoryUrl>https://github.com/AlexMacocian/SystemExtensions</RepositoryUrl>
+    <Description>Security extensions for the System namespace</Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="../LICENSE">
+      <Pack>True</Pack>
+      <PackagePath></PackagePath>
+    </None>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="8.0.0" />
+  </ItemGroup>
+
+</Project>

SystemExtensions.NetStandard.Security/Utilities/NotClosingCryptoStream.cs

@@ -0,0 +1,22 @@
+using System.IO;
+using System.Security.Cryptography;
+
+namespace System.Security.Utilities;
+
+internal sealed class NotClosingCryptoStream : CryptoStream
+{
+    public NotClosingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
+        : base(stream, transform, mode)
+    {
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        if (!this.HasFlushedFinalBlock)
+        {
+            this.FlushFinalBlock();
+        }
+
+        base.Dispose(false);
+    }
+}

SystemExtensions.NetStandard/Cache/AsyncValueCache.cs

@@ -0,0 +1,36 @@
+using System.Extensions;
+using System.Threading.Tasks;
+
+namespace System.Cache;
+public sealed class AsyncValueCache<T>(Func<Task<T>> cacheRefreshOperation, TimeSpan cacheDuration)
+    where T : class
+{
+    private readonly Func<Task<T>> cacheRefreshOperation = cacheRefreshOperation.ThrowIfNull(nameof(cacheRefreshOperation));
+    private readonly TimeSpan cacheDuration = cacheDuration;
+
+    private T? value;
+    private DateTime lastCacheRefresh = DateTime.MinValue;
+
+    public async Task<T> GetValue()
+    {
+        if (DateTime.Now - this.lastCacheRefresh < this.cacheDuration &&
+            this.value is not null)
+        {
+            return this.value;
+        }
+
+        return await this.PerformCacheRefresh();
+    }
+
+    public async Task<T> ForceCacheRefresh()
+    {
+        return await this.PerformCacheRefresh();
+    }
+
+    private async Task<T> PerformCacheRefresh()
+    {
+        this.value = await this.cacheRefreshOperation();
+        this.lastCacheRefresh = DateTime.Now;
+        return this.value;
+    }
+}

SystemExtensions.NetStandard/Cache/ValueCache.cs

@@ -0,0 +1,35 @@
+using System.Extensions;
+
+namespace System.Cache;
+public sealed class ValueCache<T>(Func<T> cacheRefreshOperation, TimeSpan cacheDuration)
+    where T : class
+{
+    private readonly Func<T> cacheRefreshOperation = cacheRefreshOperation.ThrowIfNull(nameof(cacheRefreshOperation));
+    private readonly TimeSpan cacheDuration = cacheDuration;
+
+    private T? value;
+    private DateTime lastCacheRefresh = DateTime.MinValue;
+
+    public T GetValue()
+    {
+        if (DateTime.Now - this.lastCacheRefresh < this.cacheDuration &&
+            this.value is not null)
+        {
+            return this.value;
+        }
+
+        return this.PerformCacheRefresh();
+    }
+
+    public T ForceCacheRefresh()
+    {
+        return this.PerformCacheRefresh();
+    }
+
+    private T PerformCacheRefresh()
+    {
+        this.value = this.cacheRefreshOperation();
+        this.lastCacheRefresh = DateTime.Now;
+        return this.value;
+    }
+}

SystemExtensions.NetStandard/Collections/AVLTree.cs

@@ -1,389 +1,401 @@
 using System.Collections.Generic;
 
-namespace System.Collections.Generic
-{
-    /// <summary>
-    /// AVL tree implementation.
-    /// Thanks to Karim Oumghar for the implementation example.
-    /// Read on https://simpledevcode.wordpress.com/2014/09/16/avl-tree-in-c/
-    /// </summary>
-    /// <typeparam name="T">Provided type.</typeparam>
-    [Serializable]
-    public sealed class AVLTree<T> : ICollection<T> where T : IComparable<T>
-    {
-        #region Fields
-        [Serializable]
-        private class AVLNode<TKey>
-        {
-            public TKey Value;
-            public AVLNode<TKey> Left;
-            public AVLNode<TKey> Right;
-            public AVLNode(TKey value)
-            {
-                this.Value = value;
-            }
-        }
-        AVLNode<T> root;
-        private int count = 0;
-        private readonly bool isReadOnly = false;
-        #endregion
-        #region Properties
-        /// <summary>
-        /// Count of items currently stored in the tree.
-        /// </summary>
-        public int Count
-        {
-            get
-            {
-                return count;
-            }
-        }
-        /// <summary>
-        /// True if the collection is readonly. False otherwise.
-        /// </summary>
-        public bool IsReadOnly => isReadOnly;
-        #endregion
-        #region Constructors
-        /// <summary>
-        /// Initializes a new instance of an AVLTree collection.
-        /// </summary>
-        public AVLTree()
-        {
+namespace System.Collections.Generic;
 
-        }
-        #endregion
-        #region Public Methods
-        /// <summary>
-        /// Adds the value to the tree.
-        /// </summary>
-        /// <param name="value">Value to be added to the tree.</param>
-        public void Add(T value)
+/// <summary>
+/// AVL tree implementation.
+/// Thanks to Karim Oumghar for the implementation example.
+/// Read on https://simpledevcode.wordpress.com/2014/09/16/avl-tree-in-c/
+/// </summary>
+/// <typeparam name="T">Provided type.</typeparam>
+[Serializable]
+public sealed class AVLTree<T> : ICollection<T> where T : IComparable<T>
+{
+    #region Fields
+    [Serializable]
+    private class AVLNode<TKey>
+    {
+        public TKey Value;
+        public AVLNode<TKey> Left = default!;
+        public AVLNode<TKey> Right = default!;
+        public AVLNode(TKey value)
         {
-            count++;
-            AVLNode<T> newItem = new AVLNode<T>(value);
-            if (root == null)
-            {
-                root = newItem;
-            }
-            else
-            {
-                root = RecursiveInsertion(root, newItem);
-            }
+            this.Value = value;
         }
-        /// <summary>
-        /// Checks if the key is contained into the tree.
-        /// </summary>
-        /// <param name="value">Value to be checked if present in the tree.</param>
-        /// <returns>True if the value is in the tree.</returns>
-        public bool Contains(T value)
+    }
+    AVLNode<T> root = default!;
+    private int count = 0;
+    private readonly bool isReadOnly = false;
+    #endregion
+    #region Properties
+    /// <summary>
+    /// Count of items currently stored in the tree.
+    /// </summary>
+    public int Count
+    {
+        get
         {
-            AVLNode<T> node = Find(value, root);
-            if (node == null)
-            {
-                return false;
-            }
-            if (node.Value.CompareTo(value) == 0)
-            {
-                return true;
-            }
-            else
-            {
-                return false;
-            }
+            return this.count;
         }
-        /// <summary>
-        /// Removes the specified value from the tree.
-        /// </summary>
-        /// <param name="value">Value to be deleted.</param>
-        public bool Remove(T value)
+    }
+    /// <summary>
+    /// True if the collection is readonly. False otherwise.
+    /// </summary>
+    public bool IsReadOnly => this.isReadOnly;
+    #endregion
+    #region Constructors
+    /// <summary>
+    /// Initializes a new instance of an AVLTree collection.
+    /// </summary>
+    public AVLTree()
+    {
+
+    }
+    #endregion
+    #region Public Methods
+    /// <summary>
+    /// Adds the value to the tree.
+    /// </summary>
+    /// <param name="value">Value to be added to the tree.</param>
+    public void Add(T value)
+    {
+        this.count++;
+        var newItem = new AVLNode<T>(value);
+        if (this.root == null)
+        {
+            this.root = newItem;
+        }
+        else
+        {
+            this.root = this.RecursiveInsertion(this.root, newItem);
+        }
+    }
+    /// <summary>
+    /// Checks if the key is contained into the tree.
+    /// </summary>
+    /// <param name="value">Value to be checked if present in the tree.</param>
+    /// <returns>True if the value is in the tree.</returns>
+    public bool Contains(T value)
+    {
+        var node = this.Find(value, this.root);
+        if (node == null)
+        {
+            return false;
+        }
+
+        if (node.Value.CompareTo(value) == 0)
         {
-            root = Delete(root, value);
             return true;
         }
-        /// <summary>
-        /// Clears the tree.
-        /// </summary>
-        public void Clear()
+        else
         {
-            Queue<AVLNode<T>> queue = new Queue<AVLNode<T>>();
-            queue.Enqueue(root);
+            return false;
+        }
+    }
+    /// <summary>
+    /// Removes the specified value from the tree.
+    /// </summary>
+    /// <param name="value">Value to be deleted.</param>
+    public bool Remove(T value)
+    {
+        this.root = this.Delete(this.root, value)!;
+        return true;
+    }
+    /// <summary>
+    /// Clears the tree.
+    /// </summary>
+    public void Clear()
+    {
+        var queue = new Queue<AVLNode<T>>();
+        queue.Enqueue(this.root);
 
-            while (queue.Count > 0)
-            {
-                AVLNode<T> currentNode = queue.Dequeue();
-                if (currentNode.Left != null)
-                {
-                    queue.Enqueue(currentNode.Left);
-                    currentNode.Left = null;
-                    count--;
-                }
-                if (currentNode.Right != null)
-                {
-                    queue.Enqueue(currentNode.Right);
-                    currentNode.Right = null;
-                    count--;
-                }
-            }
-            root = null;
-            count--;
-        }
-        /// <summary>
-        /// Copies the tree onto the provided array.
-        /// </summary>
-        /// <param name="array">Array to store the values in the tree.</param>
-        /// <param name="arrayIndex">Starting index of the provided array.</param>
-        public void CopyTo(T[] array, int arrayIndex)
+        while (queue.Count > 0)
         {
-            Queue<AVLNode<T>> queue = new Queue<AVLNode<T>>();
-            queue.Enqueue(root);
-            while (queue.Count > 0)
+            var currentNode = queue.Dequeue();
+            if (currentNode.Left != null)
             {
-                AVLNode<T> currentNode = queue.Dequeue();
-                array[arrayIndex++] = currentNode.Value;
-                if (currentNode.Left != null)
-                {
-                    queue.Enqueue(currentNode.Left);
-                }
-                if (currentNode.Right != null)
-                {
-                    queue.Enqueue(currentNode.Right);
-                }
+                queue.Enqueue(currentNode.Left);
+                currentNode.Left = default!;
+                this.count--;
+            }
+
+            if (currentNode.Right != null)
+            {
+                queue.Enqueue(currentNode.Right);
+                currentNode.Right = default!;
+                this.count--;
             }
         }
-        /// <summary>
-        /// Enumerator that iterates over the tree.
-        /// </summary>
-        /// <returns></returns>
-        public IEnumerator<T> GetEnumerator()
+
+        this.root = default!;
+        this.count--;
+    }
+    /// <summary>
+    /// Copies the tree onto the provided array.
+    /// </summary>
+    /// <param name="array">Array to store the values in the tree.</param>
+    /// <param name="arrayIndex">Starting index of the provided array.</param>
+    public void CopyTo(T[] array, int arrayIndex)
+    {
+        var queue = new Queue<AVLNode<T>>();
+        queue.Enqueue(this.root);
+        while (queue.Count > 0)
         {
-            return GetEnumerator(root);
+            var currentNode = queue.Dequeue();
+            array[arrayIndex++] = currentNode.Value;
+            if (currentNode.Left != null)
+            {
+                queue.Enqueue(currentNode.Left);
+            }
+
+            if (currentNode.Right != null)
+            {
+                queue.Enqueue(currentNode.Right);
+            }
         }
-        /// <summary>
-        /// Copies the tree structure into an array.
-        /// </summary>
-        /// <returns>Array containing the values contained in the tree.</returns>
-        public T[] ToArray()
+    }
+    /// <summary>
+    /// Enumerator that iterates over the tree.
+    /// </summary>
+    /// <returns></returns>
+    public IEnumerator<T> GetEnumerator()
+    {
+        return this.GetEnumerator(this.root);
+    }
+    /// <summary>
+    /// Copies the tree structure into an array.
+    /// </summary>
+    /// <returns>Array containing the values contained in the tree.</returns>
+    public T[] ToArray()
+    {
+        var array = new T[this.count];
+        this.CopyTo(array, 0);
+        return array;
+    }
+    #endregion
+    #region Private Methods
+    private AVLNode<T> RecursiveInsertion(AVLNode<T> current, AVLNode<T> n)
+    {
+        if (current == null)
         {
-            T[] array = new T[count];
-            CopyTo(array, 0);
-            return array;
-        }
-        #endregion
-        #region Private Methods
-        private AVLNode<T> RecursiveInsertion(AVLNode<T> current, AVLNode<T> n)
-        {
-            if (current == null)
-            {
-                current = n;
-                return current;
-            }
-            else if (n.Value.CompareTo(current.Value) < 0)
-            {
-                current.Left = RecursiveInsertion(current.Left, n);
-                current = BalanceTree(current);
-            }
-            else if (n.Value.CompareTo(current.Value) > 0)
-            {
-                current.Right = RecursiveInsertion(current.Right, n);
-                current = BalanceTree(current);
-            }
+            current = n;
             return current;
         }
-        private AVLNode<T> BalanceTree(AVLNode<T> current)
+        else if (n.Value.CompareTo(current.Value) < 0)
         {
-            int b_factor = BalanceFactor(current);
-            if (b_factor > 1)
-            {
-                if (BalanceFactor(current.Left) > 0)
-                {
-                    current = RotateLL(current);
-                }
-                else
-                {
-                    current = RotateLR(current);
-                }
-            }
-            else if (b_factor < -1)
-            {
-                if (BalanceFactor(current.Right) > 0)
-                {
-                    current = RotateRL(current);
-                }
-                else
-                {
-                    current = RotateRR(current);
-                }
-            }
-            return current;
+            current.Left = this.RecursiveInsertion(current.Left, n);
+            current = this.BalanceTree(current);
         }
-        private AVLNode<T> Delete(AVLNode<T> current, T target)
+        else if (n.Value.CompareTo(current.Value) > 0)
         {
-            AVLNode<T> parent;
-            if (current == null)
-            { return null; }
+            current.Right = this.RecursiveInsertion(current.Right, n);
+            current = this.BalanceTree(current);
+        }
+
+        return current;
+    }
+    private AVLNode<T> BalanceTree(AVLNode<T> current)
+    {
+        var b_factor = this.BalanceFactor(current);
+        if (b_factor > 1)
+        {
+            if (this.BalanceFactor(current.Left) > 0)
+            {
+                current = this.RotateLL(current);
+            }
             else
             {
-                //left subtree
-                if (target.CompareTo(current.Value) < 0)
-                {
-                    current.Left = Delete(current.Left, target);
-                    if (BalanceFactor(current) == -2)//here
-                    {
-                        if (BalanceFactor(current.Right) <= 0)
-                        {
-                            current = RotateRR(current);
-                        }
-                        else
-                        {
-                            current = RotateRL(current);
-                        }
-                    }
-                }
-                //right subtree
-                else if (target.CompareTo(current.Value) > 0)
-                {
-                    current.Right = Delete(current.Right, target);
-                    if (BalanceFactor(current) == 2)
-                    {
-                        if (BalanceFactor(current.Left) >= 0)
-                        {
-                            current = RotateLL(current);
-                        }
-                        else
-                        {
-                            current = RotateLR(current);
-                        }
-                    }
-                }
-                //if target is found
-                else
-                {
-                    count--;
-                    if (current.Right != null)
-                    {
-                        //delete its inorder successor
-                        parent = current.Right;
-                        while (parent.Left != null)
-                        {
-                            parent = parent.Left;
-                        }
-                        current.Value = parent.Value;
-                        current.Right = Delete(current.Right, parent.Value);
-                        if (BalanceFactor(current) == 2)//rebalancing
-                        {
-                            if (BalanceFactor(current.Left) >= 0)
-                            {
-                                current = RotateLL(current);
-                            }
-                            else { current = RotateLR(current); }
-                        }
-                    }
-                    else
-                    {   //if current.left != null
-                        return current.Left;
-                    }
-                }
+                current = this.RotateLR(current);
             }
-            return current;
         }
-        private AVLNode<T> Find(T target, AVLNode<T> current)
+        else if (b_factor < -1)
         {
-            if (current == null)
+            if (this.BalanceFactor(current.Right) > 0)
             {
-                return null;
+                current = this.RotateRL(current);
             }
+            else
+            {
+                current = this.RotateRR(current);
+            }
+        }
+
+        return current;
+    }
+    private AVLNode<T>? Delete(AVLNode<T> current, T target)
+    {
+        if (current == null)
+        { return null; }
+        else
+        {
+            //left subtree
             if (target.CompareTo(current.Value) < 0)
             {
-                if (target.CompareTo(current.Value) == 0)
+                current.Left = this.Delete(current.Left, target)!;
+                if (this.BalanceFactor(current) == -2)//here
                 {
-                    return current;
+                    if (this.BalanceFactor(current.Right) <= 0)
+                    {
+                        current = this.RotateRR(current);
+                    }
+                    else
+                    {
+                        current = this.RotateRL(current);
+                    }
+                }
+            }
+            //right subtree
+            else if (target.CompareTo(current.Value) > 0)
+            {
+                current.Right = this.Delete(current.Right, target)!;
+                if (this.BalanceFactor(current) == 2)
+                {
+                    if (this.BalanceFactor(current.Left) >= 0)
+                    {
+                        current = this.RotateLL(current);
+                    }
+                    else
+                    {
+                        current = this.RotateLR(current);
+                    }
+                }
+            }
+            //if target is found
+            else
+            {
+                this.count--;
+                if (current.Right != null)
+                {
+                    //delete its inorder successor
+                    var parent = current.Right;
+                    while (parent.Left != null)
+                    {
+                        parent = parent.Left;
+                    }
+
+                    current.Value = parent.Value;
+                    current.Right = this.Delete(current.Right, parent.Value)!;
+                    if (this.BalanceFactor(current) == 2)//rebalancing
+                    {
+                        if (this.BalanceFactor(current.Left) >= 0)
+                        {
+                            current = this.RotateLL(current);
+                        }
+                        else { current = this.RotateLR(current); }
+                    }
                 }
                 else
-                    return Find(target, current.Left);
+                {   //if current.left != null
+                    return current.Left;
+                }
+            }
+        }
+
+        return current;
+    }
+    private AVLNode<T>? Find(T target, AVLNode<T> current)
+    {
+        if (current == null)
+        {
+            return null;
+        }
+
+        if (target.CompareTo(current.Value) < 0)
+        {
+            if (target.CompareTo(current.Value) == 0)
+            {
+                return current;
             }
             else
             {
-                if (target.CompareTo(current.Value) == 0)
-                {
-                    return current;
-                }
-                else
-                    return Find(target, current.Right);
+                return this.Find(target, current.Left);
             }
-
         }
-        private int Max(int l, int r)
+        else
         {
-            return l > r ? l : r;
-        }
-        private int GetHeight(AVLNode<T> current)
-        {
-            int height = 0;
-            if (current != null)
+            if (target.CompareTo(current.Value) == 0)
             {
-                int l = GetHeight(current.Left);
-                int r = GetHeight(current.Right);
-                int m = Max(l, r);
-                height = m + 1;
+                return current;
             }
-            return height;
-        }
-        private int BalanceFactor(AVLNode<T> current)
-        {
-            int l = GetHeight(current.Left);
-            int r = GetHeight(current.Right);
-            int b_factor = l - r;
-            return b_factor;
-        }
-        private AVLNode<T> RotateRR(AVLNode<T> parent)
-        {
-            AVLNode<T> pivot = parent.Right;
-            parent.Right = pivot.Left;
-            pivot.Left = parent;
-            return pivot;
-        }
-        private AVLNode<T> RotateLL(AVLNode<T> parent)
-        {
-            AVLNode<T> pivot = parent.Left;
-            parent.Left = pivot.Right;
-            pivot.Right = parent;
-            return pivot;
-        }
-        private AVLNode<T> RotateLR(AVLNode<T> parent)
-        {
-            AVLNode<T> pivot = parent.Left;
-            parent.Left = RotateRR(pivot);
-            return RotateLL(parent);
-        }
-        private AVLNode<T> RotateRL(AVLNode<T> parent)
-        {
-            AVLNode<T> pivot = parent.Right;
-            parent.Right = RotateLL(pivot);
-            return RotateRR(parent);
-        }
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            throw new NotImplementedException();
-        }
-        private IEnumerator<T> GetEnumerator(AVLNode<T> rootNode)
-        {
-            Queue<AVLNode<T>> queue = new Queue<AVLNode<T>>();
-            queue.Enqueue(rootNode);
-
-            while (queue.Count > 0)
+            else
             {
-                AVLNode<T> currentNode = queue.Dequeue();
-                yield return currentNode.Value;
-                if (currentNode.Left != null)
-                {
-                    queue.Enqueue(currentNode.Left);
-                }
-                if (currentNode.Right != null)
-                {
-                    queue.Enqueue(currentNode.Right);
-                }
+                return this.Find(target, current.Right);
             }
         }
-        #endregion
     }
+    private int Max(int l, int r)
+    {
+        return l > r ? l : r;
+    }
+    private int GetHeight(AVLNode<T> current)
+    {
+        var height = 0;
+        if (current != null)
+        {
+            var l = this.GetHeight(current.Left);
+            var r = this.GetHeight(current.Right);
+            var m = this.Max(l, r);
+            height = m + 1;
+        }
+
+        return height;
+    }
+    private int BalanceFactor(AVLNode<T> current)
+    {
+        var l = this.GetHeight(current.Left);
+        var r = this.GetHeight(current.Right);
+        var b_factor = l - r;
+        return b_factor;
+    }
+    private AVLNode<T> RotateRR(AVLNode<T> parent)
+    {
+        var pivot = parent.Right;
+        parent.Right = pivot.Left;
+        pivot.Left = parent;
+        return pivot;
+    }
+    private AVLNode<T> RotateLL(AVLNode<T> parent)
+    {
+        var pivot = parent.Left;
+        parent.Left = pivot.Right;
+        pivot.Right = parent;
+        return pivot;
+    }
+    private AVLNode<T> RotateLR(AVLNode<T> parent)
+    {
+        var pivot = parent.Left;
+        parent.Left = this.RotateRR(pivot);
+        return this.RotateLL(parent);
+    }
+    private AVLNode<T> RotateRL(AVLNode<T> parent)
+    {
+        var pivot = parent.Right;
+        parent.Right = this.RotateLL(pivot);
+        return this.RotateRR(parent);
+    }
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        throw new NotImplementedException();
+    }
+    private IEnumerator<T> GetEnumerator(AVLNode<T> rootNode)
+    {
+        var queue = new Queue<AVLNode<T>>();
+        queue.Enqueue(rootNode);
+
+        while (queue.Count > 0)
+        {
+            var currentNode = queue.Dequeue();
+            yield return currentNode.Value;
+            if (currentNode.Left != null)
+            {
+                queue.Enqueue(currentNode.Left);
+            }
+
+            if (currentNode.Right != null)
+            {
+                queue.Enqueue(currentNode.Right);
+            }
+        }
+    }
+    #endregion
 }

SystemExtensions.NetStandard/Collections/BinaryHeap.cs

@@ -1,214 +1,219 @@
 using System.Linq;
 
-namespace System.Collections.Generic
+namespace System.Collections.Generic;
+
+/// <summary>
+/// Binary heap implementation.
+/// </summary>
+/// <typeparam name="T">Provided type.</typeparam>
+[Serializable]
+public sealed class BinaryHeap<T> : IEnumerable<T> where T : IComparable<T>
 {
+    #region Fields
+    T[] items;
+    private int capacity;
+    private int count;
+    private readonly int initialCapacity;
+    #endregion
+    #region Properties
     /// <summary>
-    /// Binary heap implementation.
+    /// Minimum value from the heap.
     /// </summary>
-    /// <typeparam name="T">Provided type.</typeparam>
-    [Serializable]
-    public sealed class BinaryHeap<T> : IEnumerable<T> where T : IComparable<T>
+    public T Min
     {
-        #region Fields
-        T[] items;
-        private int capacity;
-        private int count;
-        private readonly int initialCapacity;
-        #endregion
-        #region Properties
-        /// <summary>
-        /// Minimum value from the heap.
-        /// </summary>
-        public T Min
+        get
         {
-            get
-            {
-                return items[1];
-            }
+            return this.items[1];
         }
-        /// <summary>
-        /// Maximum value from the heap.
-        /// </summary>
-        public T Max
-        {
-            get
-            {
-                return items[count];
-            }
-        }
-        /// <summary>
-        /// Capacity of the heap.
-        /// </summary>
-        public int Capacity
-        {
-            get => capacity;
-            set
-            {
-                if (value > capacity)
-                {
-                    Array.Resize(ref items, value);
-                    capacity = value;
-                }
-            }
-        }
-        /// <summary>
-        /// Number of elements in the heap.
-        /// </summary>
-        public int Count { get => count; }
-        #endregion
-        #region Constructors
-        /// <summary>
-        /// Constructor for a binary heap data structure.
-        /// </summary>
-        public BinaryHeap()
-        {
-            capacity = 10;
-            initialCapacity = capacity;
-            items = new T[capacity];
-        }
-        /// <summary>
-        /// Constructor for a binary heap data structure.
-        /// </summary>
-        /// <param name="capacity">Initial capacity of the heap. Used for initial alocation of the array.</param>
-        public BinaryHeap(int capacity)
-        {
-            this.capacity = capacity;
-            initialCapacity = capacity;
-            items = new T[capacity];
-        }
-        #endregion
-        #region Public Methods
-        /// <summary>
-        /// Adds value to the queue.
-        /// </summary>
-        /// <param name="value">Value to be added.</param>
-        public void Add(T value)
-        {
-            if (count == Capacity - 1)
-            {
-                Capacity = 2 * Capacity;
-            }
-            int position = ++count;
-            for (; position > 1 && value.CompareTo(items[position / 2]) < 0; position /= 2)
-            {
-                items[position] = items[position / 2];
-            }
-            items[position] = value;
-        }
-        /// <summary>
-        /// Removes the item at the root. Throws exception if there are no items in the heap.
-        /// </summary>
-        /// <returns>Value removed.</returns>
-        public T Remove()
-        {
-            if (count == 0)
-            {
-                throw new IndexOutOfRangeException("Heap is empty!");
-            }
-            T min = items[1];
-            items[1] = items[count--];
-            BubbleDown(1);
-            return min;
-        }
-        /// <summary>
-        /// Peeks at the item at the root. Throws exception if there are no items in the heap.
-        /// </summary>
-        /// <returns></returns>
-        public T Peek()
-        {
-            if (count == 0)
-            {
-                throw new IndexOutOfRangeException("Heap is empty!");
-            }
-            T min = items[1];
-            return min;
-        }
-        /// <summary>
-        /// Return the heap structure as an array
-        /// </summary>
-        /// <returns>Array with values sorted as in heap</returns>
-        public T[] ToArray()
-        {
-            T[] newArray = new T[count];
-            Array.Copy(items, 1, newArray, 0, count);
-            return newArray;
-        }
-        /// <summary>
-        /// Determines whether the heap contains specified value
-        /// </summary>
-        /// <param name="value">Value to locate in the heap</param>
-        /// <returns></returns>
-        public bool Contains(T value)
-        {
-            return items.Contains(value);
-        }
-        /// <summary>
-        /// Clears the heap
-        /// </summary>
-        public void Clear()
-        {
-            count = 0;
-        }
-        /// <summary>
-        /// Clears the heap.
-        /// </summary>
-        /// <param name="completeClear">Specifies if the underlying array should be cleared as well</param>
-        public void Clear(bool completeClear)
-        {
-            count = 0;
-            if (completeClear)
-            {
-                capacity = initialCapacity;
-                items = new T[initialCapacity];
-            }
-        }
-        /// <summary>
-        /// Returns an enumerator that iterates over the heap.
-        /// </summary>
-        /// <returns>Enumerator that iterates over the heap.</returns>
-        public IEnumerator<T> GetEnumerator()
-        {
-            for (int i = 0; i < count; i++)
-            {
-                yield return items[i + 1];
-            }
-        }
-        #endregion
-        #region Private Methods
-        /// <summary>
-        /// Bubble the specified element to its position
-        /// </summary>
-        /// <param name="index">Index of element to bubble</param>
-        private void BubbleDown(int index)
-        {
-            T temp = items[index];
-            int childIndex;
-            for (; 2 * index <= count; index = childIndex)
-            {
-                childIndex = 2 * index;
-                if (childIndex != Count && items[childIndex].CompareTo(items[childIndex + 1]) > 0)
-                {
-                    childIndex++;
-                }
-                if (temp.CompareTo(items[childIndex]) > 0)
-                {
-                    items[index] = items[childIndex];
-                }
-                else
-                {
-                    break;
-                }
-            }
-            items[index] = temp;
-        }
-        /// <summary>
-        /// Implementation of IEnumerator.
-        /// </summary>
-        /// <returns>Enumerator over the array.</returns>
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            throw new NotImplementedException();
-        }
-        #endregion
     }
+    /// <summary>
+    /// Maximum value from the heap.
+    /// </summary>
+    public T Max
+    {
+        get
+        {
+            return this.items[this.count];
+        }
+    }
+    /// <summary>
+    /// Capacity of the heap.
+    /// </summary>
+    public int Capacity
+    {
+        get => this.capacity;
+        set
+        {
+            if (value > this.capacity)
+            {
+                Array.Resize(ref this.items, value);
+                this.capacity = value;
+            }
+        }
+    }
+    /// <summary>
+    /// Number of elements in the heap.
+    /// </summary>
+    public int Count { get => this.count; }
+    #endregion
+    #region Constructors
+    /// <summary>
+    /// Constructor for a binary heap data structure.
+    /// </summary>
+    public BinaryHeap()
+    {
+        this.capacity = 10;
+        this.initialCapacity = this.capacity;
+        this.items = new T[this.capacity];
+    }
+    /// <summary>
+    /// Constructor for a binary heap data structure.
+    /// </summary>
+    /// <param name="capacity">Initial capacity of the heap. Used for initial alocation of the array.</param>
+    public BinaryHeap(int capacity)
+    {
+        this.capacity = capacity;
+        this.initialCapacity = capacity;
+        this.items = new T[capacity];
+    }
+    #endregion
+    #region Public Methods
+    /// <summary>
+    /// Adds value to the queue.
+    /// </summary>
+    /// <param name="value">Value to be added.</param>
+    public void Add(T value)
+    {
+        if (this.count == this.Capacity - 1)
+        {
+            this.Capacity = 2 * this.Capacity;
+        }
+
+        var position = ++this.count;
+        for (; position > 1 && value.CompareTo(this.items[position / 2]) < 0; position /= 2)
+        {
+            this.items[position] = this.items[position / 2];
+        }
+
+        this.items[position] = value;
+    }
+    /// <summary>
+    /// Removes the item at the root. Throws exception if there are no items in the heap.
+    /// </summary>
+    /// <returns>Value removed.</returns>
+    public T Remove()
+    {
+        if (this.count == 0)
+        {
+            throw new IndexOutOfRangeException("Heap is empty!");
+        }
+
+        var min = this.items[1];
+        this.items[1] = this.items[this.count--];
+        this.BubbleDown(1);
+        return min;
+    }
+    /// <summary>
+    /// Peeks at the item at the root. Throws exception if there are no items in the heap.
+    /// </summary>
+    /// <returns></returns>
+    public T Peek()
+    {
+        if (this.count == 0)
+        {
+            throw new IndexOutOfRangeException("Heap is empty!");
+        }
+
+        var min = this.items[1];
+        return min;
+    }
+    /// <summary>
+    /// Return the heap structure as an array
+    /// </summary>
+    /// <returns>Array with values sorted as in heap</returns>
+    public T[] ToArray()
+    {
+        var newArray = new T[this.count];
+        Array.Copy(this.items, 1, newArray, 0, this.count);
+        return newArray;
+    }
+    /// <summary>
+    /// Determines whether the heap contains specified value
+    /// </summary>
+    /// <param name="value">Value to locate in the heap</param>
+    /// <returns></returns>
+    public bool Contains(T value)
+    {
+        return this.items.Contains(value);
+    }
+    /// <summary>
+    /// Clears the heap
+    /// </summary>
+    public void Clear()
+    {
+        this.count = 0;
+    }
+    /// <summary>
+    /// Clears the heap.
+    /// </summary>
+    /// <param name="completeClear">Specifies if the underlying array should be cleared as well</param>
+    public void Clear(bool completeClear)
+    {
+        this.count = 0;
+        if (completeClear)
+        {
+            this.capacity = this.initialCapacity;
+            this.items = new T[this.initialCapacity];
+        }
+    }
+    /// <summary>
+    /// Returns an enumerator that iterates over the heap.
+    /// </summary>
+    /// <returns>Enumerator that iterates over the heap.</returns>
+    public IEnumerator<T> GetEnumerator()
+    {
+        for (var i = 0; i < this.count; i++)
+        {
+            yield return this.items[i + 1];
+        }
+    }
+    #endregion
+    #region Private Methods
+    /// <summary>
+    /// Bubble the specified element to its position
+    /// </summary>
+    /// <param name="index">Index of element to bubble</param>
+    private void BubbleDown(int index)
+    {
+        var temp = this.items[index];
+        int childIndex;
+        for (; 2 * index <= this.count; index = childIndex)
+        {
+            childIndex = 2 * index;
+            if (childIndex != this.Count && this.items[childIndex].CompareTo(this.items[childIndex + 1]) > 0)
+            {
+                childIndex++;
+            }
+
+            if (temp.CompareTo(this.items[childIndex]) > 0)
+            {
+                this.items[index] = this.items[childIndex];
+            }
+            else
+            {
+                break;
+            }
+        }
+
+        this.items[index] = temp;
+    }
+    /// <summary>
+    /// Implementation of IEnumerator.
+    /// </summary>
+    /// <returns>Enumerator over the array.</returns>
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        throw new NotImplementedException();
+    }
+    #endregion
 }

SystemExtensions.NetStandard/Collections/CircularBuffer.cs

@@ -0,0 +1,208 @@
+using System.Linq;
+using System.Threading;
+
+namespace System.Collections.Generic;
+public sealed class CircularBuffer<T> : IList<T>
+{
+    private readonly T[] buffer;
+    private int head;
+    private int tail;
+
+    public int Count { get; private set; }
+    public bool IsReadOnly { get; } = false;
+
+    public T this[int index]
+    {
+        get
+        {
+            if (index > this.Count)
+            {
+                throw new ArgumentOutOfRangeException(nameof(index));
+            }
+
+            return this.buffer[(this.head + index) % this.buffer.Length];
+        }
+        set
+        {
+            if (index > this.Count)
+            {
+                throw new ArgumentOutOfRangeException(nameof(index));
+            }
+
+            this.buffer[(this.head + index) % this.buffer.Length] = value;
+        }
+    }
+
+    public CircularBuffer(int capacity)
+    {
+        if (capacity < 1) throw new ArgumentException($"{nameof(capacity)} cannot be smaller than 1");
+
+        this.buffer = new T[capacity];
+        this.head = 0;
+        this.tail = 0;
+    }
+
+    public CircularBuffer(T[] buffer, int head, int tail)
+    {
+        if (buffer.Length == 0) throw new ArgumentException($"{nameof(buffer)} cannot be of length 0");
+
+        this.buffer = buffer;
+        this.head = head;
+        this.tail = tail;
+        this.Count = this.tail < this.head ?
+            this.tail + this.buffer.Length - this.head + 1 :
+            this.tail - this.head + 1;
+    }
+
+    public CircularBuffer(T[] buffer)
+    {
+        if (buffer.Length == 0) throw new ArgumentException($"{nameof(buffer)} cannot be of length 0");
+
+        this.buffer = buffer;
+        this.head = 0;
+        this.tail = this.buffer.Length - 1;
+        this.Count = this.buffer.Length;
+    }
+
+    public void Add(T item)
+    {
+        if (this.Count == this.buffer.Length)
+        {
+            this.buffer[this.tail] = item;
+            this.tail = (this.tail + 1) % this.buffer.Length;
+            this.head = (this.head + 1) % this.buffer.Length;
+        }
+        else
+        {
+            this.buffer[this.tail] = item;
+            this.tail = (this.tail + 1) % this.buffer.Length;
+            this.Count++;
+        }
+    }
+
+    public void Clear()
+    {
+        this.head = 0;
+        this.tail = 0;
+        this.Count = 0;
+    }
+
+    public void DeepClear()
+    {
+        this.Clear();
+        Array.Clear(this.buffer, 0, this.buffer.Length);
+    }
+
+    public bool Contains(T item)
+    {
+        var comparer = EqualityComparer<T>.Default;
+        foreach(var itItem in this)
+        {
+            if (comparer.Equals(itItem, item))
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public bool Remove(T item)
+    {
+        var index = this.head;
+        var comparer = EqualityComparer<T>.Default;
+        for (var i = 0; i < this.Count; i++)
+        {
+            if (comparer.Equals(this.buffer[index % this.buffer.Length], item))
+            {
+                int nextIndex;
+                for (var j = 0; j < this.Count - i - 1; j++)
+                {
+                    nextIndex = (index + 1) % this.buffer.Length;
+                    this.buffer[index] = this.buffer[nextIndex];
+                    index = nextIndex;
+                }
+
+                this.Count--;
+                this.tail = this.tail == 0 ? this.buffer.Length - 1 : this.tail - 1;
+                return true;
+            }
+
+            index = (index + 1) % this.buffer.Length;
+        }
+
+        return false;
+    }
+
+    public void CopyTo(T[] array, int arrayIndex)
+    {
+        foreach(var item in this)
+        {
+            array[arrayIndex++] = item;
+        }
+    }
+
+    public IEnumerator<T> GetEnumerator()
+    {
+        var index = this.head;
+        for (var i = 0; i < this.Count; i++)
+        {
+            yield return this.buffer[index];
+            index = (index + 1) % this.buffer.Length;
+        }
+    }
+
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return this.GetEnumerator();
+    }
+
+    public int IndexOf(T item)
+    {
+        var comparer = EqualityComparer<T>.Default;
+        for (var i = 0; i < this.Count; i++)
+        {
+            if (comparer.Equals(this[i], item))
+            {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    public void Insert(int index, T item)
+    {
+        if (index < 0 || index > this.Count) throw new ArgumentOutOfRangeException(nameof(index));
+        
+        if (this.Count == this.buffer.Length) throw new InvalidOperationException("Cannot insert into a full buffer.");
+
+        if (index == this.Count)
+        {
+            this.Add(item);
+            return;
+        }
+
+        for (var i = this.Count; i > index; i--)
+        {
+            this.buffer[(this.head + i) % this.buffer.Length] = this.buffer[(this.head + i - 1) % this.buffer.Length];
+        }
+
+        this.buffer[(this.head + index) % this.buffer.Length] = item;
+        this.tail = (this.tail + 1) % this.buffer.Length;
+        this.Count++;
+    }
+
+    public void RemoveAt(int index)
+    {
+        if (index < 0 || index >= this.Count) throw new ArgumentOutOfRangeException(nameof(index));
+
+        for (var i = index; i < this.Count - 1; i++)
+        {
+            this.buffer[(this.head + i) % this.buffer.Length] = this.buffer[(this.head + i + 1) % this.buffer.Length];
+        }
+
+        this.tail = (this.tail - 1 + this.buffer.Length) % this.buffer.Length;
+        this.Count--;
+    }
+}