ufcpp

using System.Numerics;

//var interfaces = GetAllIntegerInterfaces();
var interfaces = GetAllFloatInterfaces();

WriteMermaidGraph(
    from i in interfaces
    from b in GetUniqueBaseInterfaces(i)
    select (i.Name, b.Name));

ufcpp

// https://github.com/dotnet/roslyn/blob/main/docs/Language%20Feature%20Status.md で
// Merged into 17.3p2 になってるやつ。

using System.Diagnostics.CodeAnalysis;

// DIM for Static Members
interface IA
{
    // static abstract 自体これまで「RequiresPreviewFeatures」だったのであんまり「新機能」感はないけども。
    // 17.3p5 から、static virtual も書けるように。

ufcpp

using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.Scripting;
using System.Text;

var template = """
    class MyClass
    {
    `*
    var properties = new[] {

ufcpp

#nullable disable
#pragma warning disable IDE0004, IDE0049, IDE0052, IDE0055, IDE0060, CS1998, CS0626

using System.Runtime.CompilerServices;
using static System.Runtime.CompilerServices.Unsafe;

class A
{
    Delegate _x;
    public object X

ufcpp

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

BenchmarkRunner.Run<AsBenchmark>();

class Util
{
    public static long M1<T>(T x)
    {

ufcpp

// 【!! 終了のお知らせ】
// のはずなんだけど、 VS 17.3p1 ではまだ消えてなかった。

m(null);
static void m(string s!!) { }

ufcpp

using System.Runtime.CompilerServices;

var r = new R();

// (.NET 7 で緩和予定だけど、今は) ref struct を型引数にできない。
//ref int r = ref Unsafe.As<R, int>(ref r); // CS0306 エラー

unsafe
{
    // As<int, int> で関数ポインターを取っておいて、

ufcpp

var it = typeof(IDisposable);
var t = typeof(S);

var map = t.GetInterfaceMap(typeof(IDisposable));

ulong guard1 = 0x8_0000_0009;
var s = new S { X = 1, Y = 2, Z = 3, W = 4 };
ulong guard2 = 0x6_0000_0007;

{

ufcpp

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

BenchmarkRunner.Run<SpanBenchmark>();

[MemoryDiagnoser]
public class SpanBenchmark
{
    private const int N = 1000;

ufcpp

using System.Text;
using System.Text.Encodings.Web;
using System.Text.Json;
using System.Text.Json.Serialization;

var original = new A(123, "あいう　abc \b/\r\n\t\"\\\'🐈");

var opt = new JsonSerializerOptions
{
    //Encoder = new NoEscapingEncoder(),