lahma

[MemoryDiagnoser]
public class InterfaceVirtualConcretePitfall
{
	private static readonly List<Wrapper> concreteList = BuildSource<Wrapper>();
	private static readonly IEnumerable<Wrapper> cocreteEnumerable = BuildSource<Wrapper>();
	private static readonly List<IWrapper> interfaceList = BuildSource<IWrapper>();
	private static readonly IEnumerable<IWrapper> interfaceEnumerable = BuildSource<IWrapper>();

	private static List<T> BuildSource<T>() where T : IWrapper
	{

lahma

BenchmarkDotNet=v0.11.1, OS=Windows 10.0.17763
Intel Core i7-6820HQ CPU 2.70GHz (Skylake), 1 CPU, 8 logical and 4 physical cores
  [Host]     : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.7.3190.0
  DefaultJob : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.7.3190.0

| Method | Mean | Error | StdDev | Scaled | ScaledSD | Gen 0 | Gen 1 | Gen 2 | Allocated |

lahma

[MemoryDiagnoser]
public class LinqPitfall
{
    private static readonly int[] source = Enumerable.Range(1, 100_000).ToArray();

    private readonly HashSet<int> forbidden = new HashSet<int>
    {
        123, 234, 345, 456, 567, 678, 789, 890, 901, 1000
    };

lahma

var results = await session.Query<Document>()
  .Select(x => new
  {
     Id = x.Id,
     ExtractedIds = x.SomeCollection.ToArray()
  })
  .ToListAsync();

lahma

public class DocumentTransformer : AbstractTransformerCreationTask<Document>
{
    public class Result
    {
        public string Id { get; set; }
        public string[] ExtractedIds { get; set; }
    }

    public DocumentTransformer()
    {

lahma

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

namespace Jint.Benchmark
{
    [MemoryDiagnoser]
    public class IntParseBenchmark
    {
        private const int N = 1_000_000;

lahma

using System.Runtime.CompilerServices;
 using BenchmarkDotNet.Attributes;
 
 namespace Jint.Benchmark
 {
     public class ArrayAccessBenchmark
     {
         private class PropertyDescriptor
         {
         }

lahma

## ArrayBenchmark

| **Diff**|Method|N|Mean|Gen 0|Allocated|
|------- |-------|-------|-------:|-------:|-------:|
| Old |Slice|100|419.5 us|161.1328|660.16 KB|
| **New** |	|	| **489.6 us (+17%)** | **161.1328 (0%)** | **660.16 KB (0%)** |
| Old |Concat|100|474.5 us|175.7813|720.31 KB|
| **New** |	|	| **536.4 us (+13%)** | **175.7813 (0%)** | **720.31 KB (0%)** |
| Old |Unshift|100|18,321.2 us|3562.5000|14672.66 KB|
| **New** |	|	| **21,178.3 us (+16%)** | **3562.5000 (0%)** | **14672.66 KB (0%)** |

lahma

BenchmarkDotNet=v0.10.14, OS=Windows 10.0.17134
Intel Core i7-6820HQ CPU 2.70GHz (Skylake), 1 CPU, 8 logical and 4 physical cores
.NET Core SDK=2.1.300-preview2-008533
  [Host]     : .NET Core 2.1.0-preview2-26406-04 (CoreCLR 4.6.26406.07, CoreFX 4.6.26406.04), 64bit RyuJIT
  DefaultJob : .NET Core 2.1.0-preview2-26406-04 (CoreCLR 4.6.26406.07, CoreFX 4.6.26406.04), 64bit RyuJIT

lahma

using System.Runtime.CompilerServices;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Configs;
using BenchmarkDotNet.Diagnosers;

namespace Jint.Benchmark
{
    [Config(typeof(Config))]
    public class InParameterPerformance
    {