sunguangdong 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

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.

	using System;
	using UnityEngine.Profiling;

	// See UnityEngine.TestTools.Constraints.AllocatingGCMemoryConstraint
	// and https://maingauche.games/devlog/20230504-counting-allocations-in-unity/
	public class AllocCounter {
	UnityEngine.Profiling.Recorder rec;

	public AllocCounter() {
	rec = Recorder.Get("GC.Alloc");

	root = true

	############################################
	# 既定は“ほぼ無効”（外部アセット含む全域）
	############################################
	[*.cs]
	dotnet_analyzer_diagnostic.severity = silent

	############################################
	# 自作コードだけ有効化（ホワイトリスト）

	/** 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

	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) {

	using UnityEngine;
	using System.Collections;

	public class NetworkInterpolatedTransform : MonoBehaviour
	{
	public double interpolationBackTime = 0.1;

	internal struct State
	{
	internal double timestamp;

sunguangdong SunGuangdong

原則

Unity-Best-Practice

Scripting

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

	/*
	* 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

	using UnityEngine;

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

	public void Awake()
	{

	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