Gabor Ottlik OttlikG

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

What is this?

Following this guide will set up a local Elasticsearch with Kibana and Marvel using Homebrew and Homebrew Cask

Prerequisites

If you already have Java installed on your system, skip steps Install Cask and Install Java

If you already have Java and Homebrew installed on your system, skip steps Prerequisites, start at Install Elasticsearch and Kibana after running $ brew update

Install Homebrew

$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Why

Doing require extensions correctly is essential, because:

Users should be able to install multiple extensions in succession, and have them work together.
Coverage tools like nyc need it to reliably supply coverage information that takes into account sourcemaps from upstream transforms.
Because non-standard, un-predictable behavior causes hard to solve bugs, and major headaches for project maintainers.

What is a require extension anyways?

Plain JavaScript objects are better than classes when they can be used, and many popular modern frameworks have adopted their use.

Consider that in React a component can be created as either a class or as an object.

// using a class
class Welcome extends React.Component {
  render() {
 Hello, {this.props.name}

	<?php

	// ...

	class FeatureContext extends MinkContext
	{
	/**
	* Looks for a table, then looks for a row that contains the given text.
	* Once it finds the right row, it clicks a link in that row.
	*

	# http://pecl.php.net/package/APCu
	# http://pecl.php.net/package/ZendOpcache

	# Install ZendOpcache
	sudo pecl install ZendOpcache-beta
	sudo -i
	cat > /etc/php5/mods-available/opcache.ini << EOF
	zend_extension=/usr/lib/php5/20100525/opcache.so
	opcache.memory_consumption=128
	opcache.interned_strings_buffer=8

	import React from 'react';

	let lastScrollY = 0;
	let ticking = false;

	class App extends React.Component {
	componentDidMount() {
	window.addEventListener('scroll', this.handleScroll, true);
	}

	#!/bin/bash
	#requires jq -> http://stedolan.github.io/jq/

	#optional change working_dir
	working_dir=${1-$(pwd)}
	cd $working_dir

	user="github_username"
	token="application token"
	organization="Organization_Name"

	Programming Language Checklist
	by Colin McMillen, Jason Reed, and Elly Jones.

	You appear to be advocating a new:
	[ ] functional [ ] imperative [ ] object-oriented [ ] procedural [ ] stack-based
	[ ] "multi-paradigm" [ ] lazy [ ] eager [ ] statically-typed [ ] dynamically-typed
	[ ] pure [ ] impure [ ] non-hygienic [ ] visual [ ] beginner-friendly
	[ ] non-programmer-friendly [ ] completely incomprehensible
	programming language. Your language will not work. Here is why it will not work.