Probably benchmarking...

Dave Black udlose

Probably benchmarking...

I solve difficult problems... .NET Performance/Solution Architect and Creator of MermaidPad - https://github.com/udlose/MermaidPad/

udlose / ForVsForeach_Benchmark.linq

Last active April 22, 2026 20:24

for vs. foreach iteration over List<Guid>

	// LinqPad BenchmarkDotNet script
	// Compares for-loop (indexer) vs foreach (struct enumerator) over List<T>
	// at sizes relevant to EntryDoor slab definition lists.
	//
	// Required NuGet: BenchmarkDotNet
	//
	// NOTE: Set the target framework and runtime in your LinqPad/project settings.

	void Main()
	{

udlose / SpanIndexOfBenchmark.cs

Created March 13, 2026 16:06

SpanIndexOfBenchmark




	// run with:
	// dotnet run -c Release --framework net10.0 -- --filter *




	// * Summary *

udlose / IterationBenchmarks_for_vs_foreach_ValueType.linq

Created February 16, 2026 21:30

Benchmark comparing for vs foreach on List<int> using .NET 10 x64 vs .NET Framework 4.8.1 x64 RyuJIT vs .NET Framework 4.8.1 x86 LegacyJIT

	[MemoryDiagnoser]
	[GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
	[Config(typeof(IterationBenchmarks_for_vs_foreach_ValueType.IterationBenchmarksConfig))]
	public class IterationBenchmarks_for_vs_foreach_ValueType
	{
	[Params(1_000, 10_000, 50_000)]
	public int Count;

	private List<int> _listOfInt = null;
	private Consumer _consumer = null;

udlose / Dictionary_Lookup_Hit_vs_Miss_for_Guid_vs_String.linq

Last active February 9, 2026 00:06

Dictionary Lookup Hit vs Miss for Guid vs string

	[MemoryDiagnoser]
	public class DictionaryKeyLookupHitBenchmarks
	{
	private readonly Consumer _consumer = new Consumer();

	private Guid[] _guidKeys = Array.Empty<Guid>();
	private string[] _string20Keys = Array.Empty<string>();
	private string[] _string50Keys = Array.Empty<string>();

	private Dictionary<Guid, int> _guidDictionary = new Dictionary<Guid, int>();

udlose / Dictionary_Add_with_key_of_type_Guid_vs_string.linq

Created February 2, 2026 16:48

Dictionary Add with key of type Guid vs string

	[MemoryDiagnoser]
	[Config(typeof(DictionaryKeyAddBenchmarks.DictionaryKeyAddBenchmarksConfig))]
	public class DictionaryKeyAddBenchmarks
	{
	private readonly Consumer _consumer = new Consumer();

	private Guid[] _guidKeys = Array.Empty<Guid>();
	private string[] _string_20_Keys = Array.Empty<string>();
	private string[] _string_50_Keys = Array.Empty<string>();

udlose / ArrayList_foreach_object_vs_specific_type_ReferenceType_Benchmarks.linq

Created January 30, 2026 17:36

ArrayList_foreach_object_vs_specific_type_ReferenceType_Benchmarks

	[MemoryDiagnoser]
	[GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
	[CategoriesColumn]
	[Config(typeof(IterationBenchmarks.IterationBenchmarksConfig))]
	public class IterationBenchmarks
	{
	[Params(1_000, 10_000, 50_000)]
	public int Count;

	private ArrayList _arrayList = null;

udlose / ArrayList_foreach_vs_List(Person)_foreach_ReferenceType_Benchmarks.linq

Last active January 30, 2026 17:43

.NET Benchmark for comparing iteration using foreach over ArrayList vs List<T> containing Reference Type

	[MemoryDiagnoser]
	[GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
	[CategoriesColumn]
	[Config(typeof(IterationBenchmarks.IterationBenchmarksConfig))]
	public class IterationBenchmarks
	{
	[Params(1_000, 10_000, 50_000)]
	public int Count;

	private ArrayList _arrayList = null;

udlose / ArrayList_foreach_vs_List(int)_foreach_ValueType_Benchmarks.linq

Last active January 30, 2026 17:41

.NET Benchmark and Results for comparing iteration using foreach over ArrayList vs List<T> containing Value Type

	[MemoryDiagnoser]
	[GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
	[CategoriesColumn]
	[Config(typeof(IterationBenchmarks.IterationBenchmarksConfig))]
	public class IterationBenchmarks
	{
	[Params(1_000, 10_000, 50_000)]
	public int Count;

	private ArrayList _arrayList = null;

udlose / ArrayList_foreach_vs_for_Loop_ReferenceType_Benchmarks.linq

Last active June 8, 2026 15:27

.NET Benchmark and Results for comparing iteration using foreach vs for over ArrayList containing Reference Type

	using System;
	using System.Collections;
	using System.Runtime.CompilerServices;
	using BenchmarkDotNet.Attributes;
	using BenchmarkDotNet.Columns;
	using BenchmarkDotNet.Configs;
	using BenchmarkDotNet.Engines;
	using BenchmarkDotNet.Running;

	[MemoryDiagnoser]

udlose / ArrayList_for_vs_foreach_Loop_ValueType_Benchmarks.linq

Last active February 2, 2026 15:14

.NET Benchmark and Results for comparing iteration using foreach vs for over ArrayList containing Value Type

	using System;
	using System.Collections;
	using System.Runtime.CompilerServices;
	using BenchmarkDotNet.Attributes;
	using BenchmarkDotNet.Columns;
	using BenchmarkDotNet.Configs;
	using BenchmarkDotNet.Engines;
	using BenchmarkDotNet.Running;

	[MemoryDiagnoser]