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Release 5.21.0
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‎CHANGELOG.md‎

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11
Release Notes
22
====
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# 04-08-2025
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<a href="https://www.nuget.org/packages/dotnext/5.21.0">DotNext 5.21.0</a>
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* Added `Disposable.CreateException()` protected method
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<a href="https://www.nuget.org/packages/dotnext.metaprogramming/5.21.0">DotNext.Metaprogramming 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.unsafe/5.21.0">DotNext.Unsafe 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.threading/5.21.0">DotNext.Threading 5.21.0</a>
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* Added `Contains`, `ReplaceAsync` methods to `RandomAccessCache<TKey, TValue>` class as well as scanning enumerator
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<a href="https://www.nuget.org/packages/dotnext.io/5.21.0">DotNext.IO 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.net.cluster/5.21.0">DotNext.Net.Cluster 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.aspnetcore.cluster/5.21.0">DotNext.AspNetCore.Cluster 5.21.0</a>
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* Updated dependencies
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# 03-30-2025
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<a href="https://www.nuget.org/packages/dotnext/5.20.0">DotNext 5.20.0</a>
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* Introduced `List.Repeat()` static method to construct read-only lists of repeatable items. Similar to [Enumerable.Repeat](https://learn.microsoft.com/en-us/dotnet/api/system.linq.enumerable.repeat) but returns [IReadOnlyList&lt;T&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ireadonlylist-1)

‎README.md‎

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@@ -44,29 +44,27 @@ All these things are implemented in 100% managed code on top of existing .NET AP
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* [NuGet Packages](https://www.nuget.org/profiles/rvsakno)
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# What's new
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Release Date: 03-30-2025
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Release Date: 04-08-2025
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<a href="https://www.nuget.org/packages/dotnext/5.20.0">DotNext 5.20.0</a>
50-
* Introduced `List.Repeat()` static method to construct read-only lists of repeatable items. Similar to [Enumerable.Repeat](https://learn.microsoft.com/en-us/dotnet/api/system.linq.enumerable.repeat) but returns [IReadOnlyList&lt;T&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ireadonlylist-1)
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* Added `Number.RoundUp` and `Number.RoundDown` generic extension methods to round the numbers to the multiple of the specified value
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<a href="https://www.nuget.org/packages/dotnext/5.21.0">DotNext 5.21.0</a>
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* Added `Disposable.CreateException()` protected method
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<a href="https://www.nuget.org/packages/dotnext.metaprogramming/5.20.0">DotNext.Metaprogramming 5.20.0</a>
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<a href="https://www.nuget.org/packages/dotnext.metaprogramming/5.21.0">DotNext.Metaprogramming 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.unsafe/5.20.0">DotNext.Unsafe 5.20.0</a>
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* Added static methods to `UnmanagedMemory` for page-aligned memory allocation
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<a href="https://www.nuget.org/packages/dotnext.unsafe/5.21.0">DotNext.Unsafe 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.threading/5.20.0">DotNext.Threading 5.20.0</a>
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* Improved debugging experience of `RandomAccessCache<TKey, TValue>` class
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* Added `AsyncCounter.TryIncrement` method that allows to specify the upper bound of the counter. As a result, `AsyncCounter` class can be used as a rate limiter
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<a href="https://www.nuget.org/packages/dotnext.threading/5.21.0">DotNext.Threading 5.21.0</a>
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* Added `Contains`, `ReplaceAsync` methods to `RandomAccessCache<TKey, TValue>` class as well as scanning enumerator
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<a href="https://www.nuget.org/packages/dotnext.io/5.20.0">DotNext.IO 5.20.0</a>
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* Introduced `DiskSpacePool` class to assist with building caches when the cached data stored on the disk rather than in memory. The class can be combined with `RandomAccessCache<TKey, TValue>` to organize L1 application-specific caches (while L0 resides in memory and can be organized on top of `RandomAccessCache<TKey, TValue>` as well)
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<a href="https://www.nuget.org/packages/dotnext.io/5.21.0">DotNext.IO 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.net.cluster/5.20.0">DotNext.Net.Cluster 5.20.0</a>
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<a href="https://www.nuget.org/packages/dotnext.net.cluster/5.21.0">DotNext.Net.Cluster 5.21.0</a>
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* Updated dependencies
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<a href="https://www.nuget.org/packages/dotnext.aspnetcore.cluster/5.20.0">DotNext.AspNetCore.Cluster 5.20.0</a>
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<a href="https://www.nuget.org/packages/dotnext.aspnetcore.cluster/5.21.0">DotNext.AspNetCore.Cluster 5.21.0</a>
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* Updated dependencies
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Changelog for previous versions located [here](./CHANGELOG.md).

‎src/Directory.Packages.props‎

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</ItemGroup>
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<ItemGroup>
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<!--Microsoft packages-->
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<PackageVersion Include="Microsoft.AspNetCore.Connections.Abstractions" Version="8.0.12" />
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<PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.2" />
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<PackageVersion Include="Microsoft.AspNetCore.Connections.Abstractions" Version="8.0.14" />
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<PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.3" />
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<PackageVersion Include="Microsoft.Extensions.Hosting.Abstractions" Version="8.0.1" />
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<PackageVersion Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
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<PackageVersion Include="Microsoft.Extensions.Http" Version="8.0.1" />
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<PackageVersion Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0" />
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<PackageVersion Include="Microsoft.Extensions.Logging.Console" Version="8.0.1" />
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<PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.1" />
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<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
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<PackageVersion Include="MSTest.Engine" Version="1.0.0-alpha.24562.1" />
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<PackageVersion Include="MSTest.SourceGeneration" Version="1.0.0-alpha.24562.1" />
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<PackageVersion Include="Microsoft.Testing.Extensions.TrxReport" Version="1.0.2" />
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<PackageVersion Include="Microsoft.Testing.Platform.MSBuild" Version="1.5.1" />
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<PackageVersion Include="MSTest.TestFramework" Version="3.7.1" />
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<PackageVersion Include="MSTest.Analyzers" Version="3.7.1" />
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<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
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<PackageVersion Include="MSTest.Engine" Version="1.0.0-alpha.25167.10" />
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<PackageVersion Include="MSTest.SourceGeneration" Version="1.0.0-alpha.25167.10" />
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<PackageVersion Include="Microsoft.Testing.Extensions.TrxReport" Version="1.6.3" />
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<PackageVersion Include="Microsoft.Testing.Platform.MSBuild" Version="1.6.3" />
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<PackageVersion Include="MSTest.TestFramework" Version="3.8.3" />
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<PackageVersion Include="MSTest.Analyzers" Version="3.8.3" />
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</ItemGroup>
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<ItemGroup>
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<!--Misc packages-->
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<PackageVersion Include="BenchmarkDotNet" Version="0.14.0" />
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<PackageVersion Include="FastMember.Signed" Version="1.5.0" />
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<PackageVersion Include="xunit" Version="2.9.3" />
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<PackageVersion Include="xunit.runner.visualstudio" Version="3.0.1"/>
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<PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2"/>
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<PackageVersion Include="coverlet.collector" Version="6.0.4"/>
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</ItemGroup>
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</Project>

‎src/DotNext.IO/DotNext.IO.csproj‎

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<Authors>.NET Foundation and Contributors</Authors>
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<Company />
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<Product>.NEXT Family of Libraries</Product>
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<VersionPrefix>5.20.0</VersionPrefix>
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<VersionPrefix>5.21.0</VersionPrefix>
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<VersionSuffix></VersionSuffix>
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<AssemblyName>DotNext.IO</AssemblyName>
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<PackageLicenseExpression>MIT</PackageLicenseExpression>

‎src/DotNext.Metaprogramming/DotNext.Metaprogramming.csproj‎

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<ImplicitUsings>true</ImplicitUsings>
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<IsAotCompatible>false</IsAotCompatible>
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<Features>nullablePublicOnly</Features>
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<VersionPrefix>5.20.0</VersionPrefix>
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<VersionPrefix>5.21.0</VersionPrefix>
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<VersionSuffix></VersionSuffix>
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<Authors>.NET Foundation</Authors>
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<Product>.NEXT Family of Libraries</Product>

‎src/DotNext.Metaprogramming/Metaprogramming/LambdaContext.cs‎

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internal LambdaContext(LambdaExpression lambda) => this.lambda = new WeakReference(lambda);
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private LambdaExpression Lambda => lambda?.Target is LambdaExpression result ? result : throw new ObjectDisposedException(nameof(LambdaContext));
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private LambdaExpression Lambda => lambda?.Target as LambdaExpression ?? throw new ObjectDisposedException(nameof(LambdaContext));
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/// <summary>
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/// Gets parameter of the lambda function.

‎src/DotNext.Metaprogramming/Metaprogramming/LoopContext.cs‎

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internal LoopContext(ILoopLabels loop) => this.loop = new WeakReference(loop);
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private ILoopLabels Labels => loop?.Target is ILoopLabels result ? result : throw new ObjectDisposedException(nameof(LoopContext));
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private ILoopLabels Labels => loop?.Target as ILoopLabels ?? throw new ObjectDisposedException(nameof(LoopContext));
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internal LabelTarget ContinueLabel => Labels.ContinueLabel;
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‎src/DotNext.Metaprogramming/Runtime/CompilerServices/AsyncStateMachineBuilder.cs‎

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}
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}
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private static MemberExpression[] CreateStateHolderType(Type returnType, bool usePooling, IReadOnlyList<ParameterExpression> variables, out ParameterExpression stateMachine)
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private static MemberExpression[] CreateStateHolderType(Type returnType, bool usePooling, ReadOnlySpan<ParameterExpression> variables, out ParameterExpression stateMachine)
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{
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var sm = new StateMachineBuilder(returnType, usePooling);
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MemberExpression[] slots;

‎src/DotNext.Tests/DotNext.Tests.csproj‎

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<LangVersion>latest</LangVersion>
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<ImplicitUsings>true</ImplicitUsings>
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<EnableNETAnalyzers>false</EnableNETAnalyzers>
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<Version>5.20.0</Version>
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<Version>5.21.0</Version>
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<IsPackable>false</IsPackable>
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<Authors>.NET Foundation and Contributors</Authors>
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<Product>.NEXT Family of Libraries</Product>

‎src/DotNext.Tests/Runtime/Caching/RandomAccessCacheTests.cs‎

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{
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using (readSession)
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{
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Equal(key, readSession.Key);
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Equal(key.ToString(), readSession.Value);
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}
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}
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public static async Task StressTest()
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{
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await using var cache = new RandomAccessCache<long, string>(15);
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Null(cache.KeyComparer);
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const long accessCount = 1500;
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{
111113
await using var cache = new RandomAccessCache<long, string>(15);
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using (var session = await cache.ChangeAsync(10L))
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await using (var session = await cache.ChangeAsync(10L))
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{
115117
False(session.TryGetValue(out _));
116118
session.SetValue("10");
117119
}
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Null(await cache.TryRemoveAsync(11L));
122+
True(cache.Contains(10L));
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121124
using (var session = (await cache.TryRemoveAsync(10L)).Value)
122125
{
123126
Equal("10", session.Value);
124127
}
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False(cache.Contains(10L));
125130
}
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[Fact]
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}
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False(cache.TryRemove(11L, out _, DefaultTimeout));
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True(cache.Contains(10L));
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True(cache.TryRemove(10L, out var session, DefaultTimeout));
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False(cache.Contains(10L));
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using (session)
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{
143151
Equal("10", session.Value);
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}
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False(cache.Contains(10L));
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}
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[Fact]
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229239
await cache.InvalidateAsync();
230240
}
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[Fact]
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public static async Task ReplaceWhileReadingAsync()
244+
{
245+
await using var cache = new RandomAccessCache<long, string>(15);
246+
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using (var handle = await cache.ChangeAsync(42L))
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{
249+
handle.SetValue("42");
250+
}
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True(cache.TryRead(42L, out var readSession));
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254+
using (readSession)
255+
{
256+
using (var handle = await cache.ReplaceAsync(42L))
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{
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False(handle.TryGetValue(out _));
259+
handle.SetValue("43");
260+
}
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262+
Equal("42", readSession.Value);
263+
}
264+
265+
True(cache.TryRead(42L, out readSession));
266+
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using (readSession)
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{
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Equal("43", readSession.Value);
270+
}
271+
}
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273+
[Fact]
274+
public static void ReplaceWhileReading()
275+
{
276+
using var cache = new RandomAccessCache<long, string>(15);
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using (var handle = cache.Change(42L, DefaultTimeout))
279+
{
280+
handle.SetValue("42");
281+
}
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283+
True(cache.TryRead(42L, out var readSession));
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285+
using (readSession)
286+
{
287+
using (var handle = cache.Replace(42L, DefaultTimeout))
288+
{
289+
False(handle.TryGetValue(out _));
290+
handle.SetValue("43");
291+
}
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Equal("42", readSession.Value);
294+
}
295+
296+
True(cache.TryRead(42L, out readSession));
297+
298+
using (readSession)
299+
{
300+
Equal("43", readSession.Value);
301+
}
302+
}
303+
304+
[Fact]
305+
public static void EnumeratePartially()
306+
{
307+
using var cache = new RandomAccessCache<long, string>(15);
308+
309+
using (var handle = cache.Change(42L, DefaultTimeout))
310+
{
311+
handle.SetValue("42");
312+
}
313+
314+
using (var handle = cache.Change(43L, DefaultTimeout))
315+
{
316+
handle.SetValue("43");
317+
}
318+
319+
using (var enumerator = cache.GetEnumerator())
320+
{
321+
True(enumerator.MoveNext());
322+
}
323+
}
324+
232325
[Fact]
233326
public static async Task EvictLargeItemImmediately()
234327
{
@@ -239,7 +332,7 @@ public static async Task EvictLargeItemImmediately()
239332
Eviction = (_, v) => source.TrySetResult(v),
240333
};
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242-
using (var session = await cache.ChangeAsync("101"))
335+
await using (var session = await cache.ChangeAsync("101"))
243336
{
244337
False(session.TryGetValue(out _));
245338
session.SetValue(101L); // 101 > 100, must be evicted immediately

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