Ron Shaker rshaker

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:

R1CS

Equation

$$x^2 + x + 2 == 32$$

Gates

$x * x = sym_1$
$x + sym_1 = sym_2$

Git Subtree Basics

If you hate git submodule, then you may want to give git subtree a try.

Background

When you want to use a subtree, you add the subtree to an existing repository where the subtree is a reference to another repository url and branch/tag. This add command adds all the code and files into the main repository locally; it's not just a reference to a remote repo.

When you stage and commit files for the main repo, it will add all of the remote files in the same operation. The subtree checkout will pull all the files in one pass, so there is no need to try and connect to another repo to get the portion of subtree files, because they were already included in the main repo.

Adding a subtree

Let's say you already have a git repository with at least one commit. You can add another repository into this respository like this:

A non-exhaustive list of WebGL and WebGPU frameworks and libraries. It is mostly for learning purposes as some of the libraries listed are wip/outdated/not maintained anymore.

Engines and libraries ⚙️

Name	Stars	Last Commit	Description
three.js	![GitHub

	name	wikipedia_url
	A# .NET	https://en.wikipedia.org/wiki/A_Sharp_(.NET)
	A# (Axiom)	https://en.wikipedia.org/wiki/A_Sharp_(Axiom)
	A-0 System	https://en.wikipedia.org/wiki/A-0_System
	A+	https://en.wikipedia.org/wiki/A%2B_(programming_language)
	A++	https://en.wikipedia.org/wiki/A%2B%2B
	ABAP	https://en.wikipedia.org/wiki/ABAP
	ABC	https://en.wikipedia.org/wiki/ABC_(programming_language)
	ABC ALGOL	https://en.wikipedia.org/wiki/ABC_ALGOL
	ABSET	https://en.wikipedia.org/wiki/ABSET

Option 1: Command-line download extension as zip and extract

extension_id=jifpbeccnghkjeaalbbjmodiffmgedin   # change this ID
curl -L -o "$extension_id.zip" "https://clients2.google.com/service/update2/crx?response=redirect&os=mac&arch=x86-64&nacl_arch=x86-64&prod=chromecrx&prodchannel=stable&prodversion=44.0.2403.130&x=id%3D$extension_id%26uc" 
unzip -d "$extension_id-source" "$extension_id.zip"

Thx to crxviewer for the magic download URL.

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

	import Blockly from 'blockly';

	declare interface CustomNode extends Node {
	removeAttribute(arg0: string);
	}

	const DOMURL = window.URL \|\| window.webkitURL;

	const getSvgBlob = (workspace: Blockly.WorkspaceSvg) => {
	const canvas = workspace.svgBlockCanvas_.cloneNode(true) as CustomNode;

	// This injects a box into the page that moves with the mouse;
	// Useful for debugging
	async function installMouseHelper(page) {
	await page.evaluateOnNewDocument(() => {
	// Install mouse helper only for top-level frame.
	if (window !== window.parent)
	return;
	window.addEventListener('DOMContentLoaded', () => {
	const box = document.createElement('puppeteer-mouse-pointer');
	const styleElement = document.createElement('style');

	package au.id.alexn;

	import android.content.Context;
	import android.util.AttributeSet;
	import android.util.Log;
	import android.view.MotionEvent;
	import android.view.ScaleGestureDetector;
	import android.view.View;
	import android.widget.FrameLayout;