Norm X normanzb

Prefix `*` Varargs 'Splat' Operator for Arrays

Proposal: SE-NNNN
Authors: Owen Voorhees
Review Manager: TBD
Status: Pitch
Implementation: apple/swift#25997

Introduction

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Tear-able Cloth

Javascript cloth simulation.

A Pen by Norman Xu on CodePen.

License.

	# The trick is to link the DeviceSupport folder from the beta to the stable version.
	# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

	# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
	sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

	# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

	# (A similar approach works for older versions too, just change the version number after DeviceSupport)

	function getUrlParams(search) {
	const hashes = search.slice(search.indexOf('?') + 1).split('&')
	const params = {}
	hashes.map(hash => {
	const [key, val] = hash.split('=')
	params[key] = decodeURIComponent(val)
	})
	return params
	}

	Basic Requirements:

	Computer with wired and wireless connection
	FFmpeg installation: http://www.ffmpeg.org/
	GoPro Hero 3+: http://gopro.com/
	RTMP server e.g. FMS (http://www.adobe.com/products/adobe-media-server-family.html) or CDN ingest point

	Overview:

	GoPro Hero3 cameras produce HLS streams which are consumed by control apps and their removeable monitor.

	<!doctype html>
	<html>
	<head>
	<title>iFrame memory leak prevention test</title>
	</head>
	<body>
	<h1>iFrame memory leak prevention test (void)</h1>

	<p>In IE up through version 8 adding an iframe to a page and
	removing it produces a memory leak in some cases. The pattern

	var parser = document.createElement('a');
	parser.href = "http://example.com:3000/pathname/?search=test#hash";

	parser.protocol; // => "http:"
	parser.hostname; // => "example.com"
	parser.port; // => "3000"
	parser.pathname; // => "/pathname/"
	parser.search; // => "?search=test"
	parser.hash; // => "#hash"
	parser.host; // => "example.com:3000"

	#!/bin/bash

	# Open iPhone Simulator on default location for XCode 4.3
	open /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Applications/iPhone\ Simulator.app

	# Open mobile safari
	echo Open mobile safari on emulator and press return
	read

	# Plug debug to MobileSafari.app

	// Author: Claus Wahlers
	// License: Public Domain

	// Dependencies:
	// as3commons-bytecode-1.0-RC1.swc
	// as3commons-lang-0.3.2.swc
	// as3commons-logging-2.0.swc
	// as3commons-reflect-1.3.4.swc
	// as3swf.swc
	// MinimalComps_0_9_9.swc