SunGuangdong

.NET Blog Performance Improvements で Peanut Butterと呼ばれる類の小手先の定数倍高速化まとめ(羅列) 個人的なメモをpublicにしただけなのであんまり信用しない方が。長文部分はだいたいわかってないで書いてる(数年前の自分･･･)
ランタイムやライブラリの進化で無意味になることがあります。
整えてないので見にくい。

原則

• コピーを作らない
• スタック上で完結させる（==アロケーションを避ける）Sapn<T>とstackallocは強い。ただしスタック領域は狭い。
• 仮想メソッドは遅い
• ボックス化はもっと遅い

SunGuangdong

/** Non-Alloc String Splitter for C# / .NET
 ** (c) 2024 https://github.com/sator-imaging
 ** Licensed under the MIT License

How to Use
==========
```cs
var result = new NonAllocStringSplitter("ABC DEF", ' ');
_ = result.Count;   // 2
_ = result.Value0;  // ABC

SunGuangdong

using System;
using Unity.Collections;
using Unity.Collections.LowLevel.Unsafe;

public unsafe class ArenaAllocator : IDisposable {
    byte* buffer; // 'buffer' is a pointer to a byte (i.e., byte*)
    int offset;
    readonly int capacity;

    public ArenaAllocator(int sizeInBytes) {

SunGuangdong

using UnityEngine;
using System.Collections;

public class NetworkInterpolatedTransform : MonoBehaviour 
{
    public double interpolationBackTime = 0.1; 
	
	internal struct State
	{
		internal double timestamp;

SunGuangdong

Unity-Best-Practice

Some useful tips that I find useful while learning Unity.

Disclaimer: These tips are not absolute. Some of them might be actually bad in some situations, in light of the fact that I am still struggling to learn unity right now.

Scripting

1. use attribute to attach additional behavior to the methods and variables you create

SunGuangdong

/*
 * Created by C.J. Kimberlin
 * 
 * The MIT License (MIT)
 * 
 * Copyright (c) 2019
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights

SunGuangdong

using UnityEngine;

namespace TMG.Survivors
{
    public class CameraTargetSingleton : MonoBehaviour
    {
        public static CameraTargetSingleton Instance;

        public void Awake()
        {

SunGuangdong

using System;
using UnityEngine;

public enum ValueType { Int, Float, Bool, String, Vector3 }

[Serializable]
public struct AnyValue {
    public ValueType type;

    // Storage for different types of values

SunGuangdong

using UnityEngine.Rendering.Universal;

public class DownSamplingRenderFeature : ScriptableRendererFeature
{
    DownSamplingRenderPass _renderPass;

    public override void Create()
    {
        // パスの作成
        _renderPass = new DownSamplingRenderPass

SunGuangdong

using System;
using System.Linq.Expressions;
using UnityEngine;

public class DamageCalculator : MonoBehaviour {
    void Start() {
        Func<int, int, int> damageExpression = CreateDamageEvaluator();
        int damage = damageExpression(10, 2);
        
        Debug.Log($"Calculated Damage: {damage}");