benaadams

using System;
using System.Threading;
using System.Reflection;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.Runtime.CompilerServices;

public class Abstract
{

benaadams

Modernizing a codebase for C# 9

There are lots of cases that you can improve. The examples use nullable reference types, but only the WhenNotNull example requires it.

Use the property pattern to replace IsNullorEmpty

Consider adopting the new property pattern, wherever you use IsNullOrEmpty.

string? hello = "hello world";

benaadams

public static int Entropy(this string s)
{
    if (string.IsNullOrEmpty(s)) return 0;
    
    var array = ArrayPool<char>.Shared.Rent(s.Length);
    
    s.CopyTo(0, array, 0, s.Length);
    var span = array.AsSpan(0, s.Length);
    span.Sort();

benaadams

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

namespace StackTests
{
    public class TestStackSizes
    {
        const int Iters = 128;

benaadams

using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using nint = System.Int64;

public class SequenceEqualThreshold
{
    static void Main(string[] args)

benaadams

using System;
using System.Buffers;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;
using System.Text;

using nint = System.Int64;

benaadams

using System;
using System.Text.Json;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using static Microsoft.AspNetCore.Builder.ArgumentType;

namespace Microsoft.AspNetCore.Builder
{
    public static class RequestDelegateExtensions

benaadams

using System;
using System.Diagnostics;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;

class Program
{
    const string api = "http://127.0.0.1:5001/";

benaadams

public static class TaskExtensions
{

    public static async Task<T[]> WhenAllIgnoreErrors<T>(this Task<T>[] tasks, TimeSpan timeout)
    {
        try
        {
            await Task.WhenAll(tasks).TimeoutAfter(timeout).ConfigureAwait(false);
        }
        catch { /* ignored */ }

benaadams

using System;
using System.Numerics;
using System.Runtime.Intrinsics.X86;
using static System.Console;

class Program
{
    static void Main()
    {
        FillBuckets(bucketCount: 17, values: ..17);