Szymon Kulec Scooletz

Co-founder of Dotnetos • Architect • Speaker • OSS Contributor • Performance Geek

Scooletz / CodeCopPossibleBug.cs

Last active March 2, 2016 06:48

Both tests don't work. When a struct is turned into a class, they start to work

	using System;
	using CodeCop.Core;
	using CodeCop.Core.Fluent;
	using NUnit.Framework;

	namespace CodeCop.Tests
	{
	public class CodeCopStructBugTests
	{
	public unsafe struct WithPtr

Scooletz / Program.cs

Last active April 21, 2017 08:35

ThreadStatic vs stackalloc

	using System;
	using System.Buffers;
	using System.Runtime.CompilerServices;
	using BenchmarkDotNet.Attributes;
	using BenchmarkDotNet.Running;

	namespace Locals
	{
	class Program
	{

Scooletz / Program.cs

Last active April 25, 2017 04:48

ProtofbufRaw vs regular protobuf-net

	using System;
	using System.IO;
	using System.Runtime.CompilerServices;
	using BenchmarkDotNet.Attributes;
	using BenchmarkDotNet.Running;
	using ProtoBuf;

	namespace Locals
	{
	class Program

Scooletz / perf-counter-timer-1h.cs

Created August 17, 2017 09:14

This gist provides a test showing that AverageTimer32 handles ticks greater than int.MaxValue

	namespace Tests
	{
	using System;
	using System.Diagnostics;
	using System.Security;
	using System.Threading;
	using NUnit.Framework;

	public class PerformanceCounterCategoryTest
	{

Scooletz / json.net.cs

Created February 2, 2018 21:17

JSON.NET serializers Guid

	public override void WriteValue(Guid value)
	{
	InternalWriteValue(JsonToken.String);

	string text = null;

	#if HAVE_CHAR_TO_STRING_WITH_CULTURE
	text = value.ToString("D", CultureInfo.InvariantCulture);
	#else
	text = value.ToString("D");

Scooletz / TFChunk.cs

Last active February 15, 2018 07:31

EventStore's TFChunk writing a reversable entry

	var workItem = _writerWorkItem;
	var buffer = workItem.Buffer;
	var bufferWriter = workItem.BufferWriter;

	buffer.SetLength(4);
	buffer.Position = 4;
	record.WriteTo(bufferWriter);
	var length = (int) buffer.Length - 4;
	bufferWriter.Write(length); // length suffix
	buffer.Position = 0;

Scooletz / sas.cs

Created March 17, 2018 14:48

Blob SAS Token

	public static string GetBlobReadonlySasToken(CloudStorageAccount account)
	{
	var now = DateTimeOffset.Now;

	// to address emulator running on http
	var nonHttps = account.BlobEndpoint.ToString().StartsWith("http:");

	var sas = account.GetSharedAccessSignature(new SharedAccessAccountPolicy
	{
	Services = SharedAccessAccountServices.Blob,

Scooletz / BoundChecks.cs

Created December 21, 2019 14:10

A simple case of bound checks skipped with ref and Unsafe.Add

	using System;
	using System.Runtime.CompilerServices;

	public class C
	{
	public static void A(Span<int> a)
	{
	a[0] = 1;
	a[1] = 2;
	a[2] = 3;