meziantou

// https://www.meziantou.net/entity-framework-core-history-audit-table.htm
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.ChangeTracking;
using Newtonsoft.Json;

meziantou

    public class Hashset
    {
        [Benchmark]
        public void HashSet_Int32()
        {
            var hashset = new HashSet<int>();
            for (int i = 0; i < 1000; i++)
            {
                hashset.Add(i);
            }

meziantou

// https://github.com/dotnet/corefx/blob/1597b894a2e9cac668ce6e484506eca778a85197/src/Common/src/CoreLib/System/Index.cs
// https://github.com/dotnet/corefx/blob/1597b894a2e9cac668ce6e484506eca778a85197/src/Common/src/CoreLib/System/Range.cs

using System.Runtime.CompilerServices;

namespace System
{
    /// <summary>Represent a type can be used to index a collection either from the start or the end.</summary>
    /// <remarks>
    /// Index is used by the C# compiler to support the new index syntax

meziantou

#pragma warning disable MA0048 // File name must match type name
#define INTERNAL_NULLABLE_ATTRIBUTES
#if NETSTANDARD2_0 ||  NETCOREAPP2_0 ||  NETCOREAPP2_1 ||  NETCOREAPP2_2 || NET45 || NET451 || NET452 || NET6 || NET461 || NET462 || NET47 || NET471 || NET472 || NET48

// https://github.com/dotnet/corefx/blob/48363ac826ccf66fbe31a5dcb1dc2aab9a7dd768/src/Common/src/CoreLib/System/Diagnostics/CodeAnalysis/NullableAttributes.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

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internal static class Program
{
    private static void Main()
    {
        BenchmarkRunner.Run<Remove>();
    }
}

[CoreJob]
[MemoryDiagnoser]

meziantou

[Benchmark]
public string V1()
{
    return string.Create(13, _id, (buffer, id) =>
    {
        var encode32CharsArray = _encode32CharsArray;
        buffer[0] = encode32CharsArray[(id >> 60) & 31];
        buffer[1] = encode32CharsArray[(id >> 55) & 31];
        buffer[2] = encode32CharsArray[(id >> 50) & 31];

meziantou

.NET Core 2.2.0 (CoreCLR 4.6.27110.04, CoreFX 4.6.27110.04), 64bit RyuJIT
BranchmarkString.Benchmark.V6()	
            return string.Create(13, _id, (buffer, id) =>
            ^^^
            {
            ^^^
                var encode32CharsArray = _encode32CharsArray;
            ^^^
                buffer[12] = encode32CharsArray[id & 31];
            ^^^

meziantou

static void Main(string[] args)
{
    var xsl = XDocument.Parse(@"<xsl:stylesheet version=""1.0"" 
xmlns:xsl=""http://www.w3.org/1999/XSL/Transform"" 
xmlns:msxsl=""urn:schemas-microsoft-com:xslt"" 
xmlns:user=""http://dummy/ns""> 
<msxsl:script language=""C#"" implements-prefix=""user""> 
<![CDATA[ 
public string Code() 
{ 

meziantou

private void OnPaste(object sender, DataObjectPastingEventArgs e)
{
    HandleDataObject(e.DataObject);
    e.Handled = true;
}

private void HandleDataObject(IDataObject data)
{
    if (data == null) throw new ArgumentNullException(nameof(data));

meziantou

using System;
using System.Threading;
using System.Threading.Tasks;

namespace ClassLibrary1
{
    public abstract class RemoteDataCache<T> : IDisposable
    {
        private readonly SemaphoreSlim _semaphoreSlim = new SemaphoreSlim(1, 1);
        private CacheValue<T> _value;