benchmark

Author: pimbrouwers

Danom.sln

@@ -21,6 +21,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Danom.Mvc.Tests", "test\Dan
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestHelpers", "test\TestHelpers\TestHelpers.csproj", "{B78AD031-6E72-4006-A007-ABA49570F17E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DanomBenchmark", "benchmark\DanomBenchmark.csproj", "{E198BC9B-74F8-4EF3-8404-910F1F3DCD4C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -58,6 +60,10 @@ Global
 		{B78AD031-6E72-4006-A007-ABA49570F17E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{B78AD031-6E72-4006-A007-ABA49570F17E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{B78AD031-6E72-4006-A007-ABA49570F17E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E198BC9B-74F8-4EF3-8404-910F1F3DCD4C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E198BC9B-74F8-4EF3-8404-910F1F3DCD4C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E198BC9B-74F8-4EF3-8404-910F1F3DCD4C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E198BC9B-74F8-4EF3-8404-910F1F3DCD4C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{2E1327A1-9244-49BA-BC31-9CCE3CE2335C} = {606C9E49-7696-48B1-A799-B456E680C9F0}

benchmark/DanomBenchmark.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="BenchmarkDotNet" Version="0.*" />
+    <PackageReference Include="CSharpFunctionalExtensions" Version="3.*" />
+    <PackageReference Include="OneOf" Version="3.*" />
+    <ProjectReference Include="..\src\Danom\Danom.csproj" />
+  </ItemGroup>
+
+</Project>

benchmark/Program.cs

@@ -0,0 +1,59 @@
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Running;
+using CSharpFunctionalExtensions;
+using Danom;
+using OneOf;
+using OneOf.Types;
+
+#pragma warning disable CA1822 // Mark members as static
+
+static class Program
+{
+    static void Main(string[] args)
+    {
+        BenchmarkRunner.Run<MemoryBenchmark>();
+    }
+}
+
+[MemoryDiagnoser]
+public class MemoryBenchmark
+{
+    private const int Iterations = 100;
+
+    [Benchmark(Baseline = true)]
+    public void Nullable()
+    {
+        for (var i = 0; i < Iterations; i++)
+        {
+            var x = new int?(i);
+            var _ = x is int y ? y % 2 : 0;
+        }
+    }
+
+    [Benchmark]
+    public void CSharpFunctionalExtensions()
+    {
+        for (var i = 0; i < Iterations; i++)
+        {
+            var _ = Maybe<int>.From(i).Match(i => i % 2, () => 0);
+        }
+    }
+
+    [Benchmark]
+    public void Danom()
+    {
+        for (var i = 0; i < Iterations; i++)
+        {
+            var _ = Option<int>.Some(i).Match(i => i % 2, () => 0);
+        }
+    }
+
+    [Benchmark]
+    public void OneOf()
+    {
+        for (var i = 0; i < Iterations; i++)
+        {
+            var _ = OneOf<int, None>.FromT0(i).Match(i => i % 2, _ => 0);
+        }
+    }
+}