Jonas Hermsmeier jhermsmeier

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

A half-hour to learn Zig

This is inspired by https://fasterthanli.me/blog/2020/a-half-hour-to-learn-rust/

Basics

the command zig run my_code.zig will compile and immediately run your Zig program. Each of these cells contains a zig program that you can try to run (some of them contain compile-time errors that you can comment out to play with)

%GetOptimizationStatus return a set of bitwise flags instead of a single value, to access the value, you need to take the binary representation of the returned value. Now, for example, if 65 is returned, the binary representation is the following:

(65).toString(2).padStart(12, '0');
// 000001000001

Each binary digit acts as a boolean with the following meaning:

	using UnityEngine;

	public class ClampedCurveAttribute : PropertyAttribute
	{
	public readonly float MinX;
	public readonly float MaxX;
	public readonly float MinY;
	public readonly float MaxY;

	public ClampedCurveAttribute( float minX, float maxX, float minY, float maxY )

	MIT License

	Copyright (c) 2021 Daniel Ethridge

	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
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	/**!
	* Fast CRC32 in JavaScript
	* 101arrowz (https://github.com/101arrowz)
	* License: MIT
	*/

	// If you use this code, please link this gist or attribute it somehow.

	// This code uses the Slice-by-16 algorithm to achieve performance
	// roughly 2x greater than all other JS CRC32 implementations (e.g.

	input[type="search"]::-webkit-search-cancel-button {
	--size: 11px;
	--background: #7F7F7F;
	--icon: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI3IiBoZWlnaHQ9IjciIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgc3Ryb2tlPSIjZmZmIiBzdHJva2Utd2lkdGg9IjMiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCIgY2xhc3M9ImZlYXRoZXIgZmVhdGhlci14Ij48cGF0aCBkPSJNMTggNkw2IDE4TTYgNmwxMiAxMiIvPjwvc3ZnPgo=");
	-webkit-appearance: none;
	height: var(--size);
	width: var(--size);
	border-radius: 50%;
	background: var(--background) var(--icon) 50% 50% no-repeat;
	}

	(Adapted from https://stackoverflow.com/a/39820517)
	set r to "" -- an empty variable for appending a string
	tell application "Safari"
	repeat with w in windows -- loop for each window, w is a variable which contain the window object
	if exists current tab of w then -- is a valid browser window
	repeat with t in tabs of w -- loop for each tab of this window, , t is a variable which contain the tab object
	-- get the title (name) of this tab and get the url of this tab
	tell t to set r to r & "- [ ] [" & name & "](" & URL & ")" & linefeed -- append a line to the variable (r)
	(*
	'linefeed' mean a line break

	// Based on the Unity Wiki FloatingOrigin script by Peter Stirling
	// URL: http://wiki.unity3d.com/index.php/Floating_Origin

	using UnityEngine;
	using UnityEngine.SceneManagement;

	public class FloatingOrigin : MonoBehaviour
	{
	[Tooltip("Point of reference from which to check the distance to origin.")]
	public Transform ReferenceObject = null;

	Mute these words in your settings here: https://twitter.com/settings/muted_keywords

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