Pavel paveljurca

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

layout: post title: Next circular array item

A function that returns the next item in a given array. Starts over when the last item is reached.

var next = nextCircularItem(['x', 'y', 'z']);

	/*
	This script attempts to identify all CSS classes mentioned in HTML but not defined in the stylesheets.

	In order to use it, just run it in the DevTools console (or add it to DevTools Snippets and run it from there).

	Note that this script requires browser to support `fetch` and some ES6 features (fat arrow, Promises, Array.from, Set). You can transpile it to ES5 here: https://babeljs.io/repl/ .

	Known limitations:
	- it won't be able to take into account some external stylesheets (if CORS isn't set up)
	- it will produce false negatives for classes that are mentioned in the comments.

	#!/bin/bash

	# Disclaimer: never got this to work properly and have not attempted it since.

	# This will require about 30GB of space, still in experimental phase right now

	sudo gem install iesd
	cd /Applications # Or wherever you hve the "Install 10.12 Developer Preview.app" available
	iesd -i Install\ 10.12\ Developer\ Preview.app -o macos.dmg -t BaseSystem
	hdiutil convert macos.dmg -format UDSP -o macos.sparseimage

	SELECT p.pi_id pi_id
	, p.request_id request_id
	, pi.alias alias
	, p.project_path project_path
	, pi.career pi_career
	, pi.name pi_name
	, us.id share_pi_id
	, us.alias share_alias
	, m.is_user is_user
	, m.name name

	#!/usr/bin/env python3

	import sys
	from requests import get

	CRIME_CODE = 821 # = bribery

	# make HTTP GET request for areas, parse them as JSON and access a list under a key "areas"
	areas = get("http://mapakriminality.cz/api/areas", params={"level": 2}).json()["areas"]

	# -- coding: utf-8 --
	"""
	This script is forked originally from Dave Jeffery. The original implementation
	was very slow and deleted around 2 tweets per second. Making it multithreaded I
	am able to delete 30-50 tweets per second.
	@author: vik-y

	----------------------------------------------------------------------------

	This script will delete all of the tweets in the specified account.

	<!DOCTYPE html>
	<html>
	<head>
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
	<meta charset="utf-8">
	<style>
	html, body {
	height: 100%;
	margin: 0;
	padding: 0;

	class Ghc < Formula
	desc "Glorious Glasgow Haskell Compilation System"
	homepage "https://haskell.org/ghc/"
	url "https://downloads.haskell.org/~ghc/7.10.2/ghc-7.10.2-x86_64-apple-darwin.tar.xz"
	sha256 "ef0f00885096e3621cec84a112dfae050cf546ad39bdef29a7719407c6bc5b36"

	def install
	system "./configure", "--prefix=#{prefix}"

	ENV.deparallelize { system "make", "install" }