paulirish

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

cvrebert

Currently considering https://github.com/webdriverio/webdrivercss

---

Core Goals:

• Can test in up-to-date versions of all major browsers
• Can test on up-to-date versions of all major OSes
• Can test in IE9 (because Bootstrap v4 will support IE9+)
• Don't want to have to setup/maintain our own cluster of VMs running all the necessary OSes (and all the versions of Windows)
• Workflow for management of reference/baseline/norm screenshots

p3t3r67x0

Styling native elements

Native HTML controls are a challenge to style. You can style any element in the web platform that uses Shadow DOM with a pseudo element ::pseudo-element or the /deep/ path selector.

video::webkit-media-controls-timeline {
  background-color: lime;
}

video /deep/ input[type=range] {

ragingwind

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
• The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
• Scaling Twitter: Making Twitter 10000 Percent Faster

UniIsland

#!/usr/bin/env python

"""Simple HTTP Server With Upload.

This module builds on BaseHTTPServer by implementing the standard GET
and HEAD requests in a fairly straightforward manner.

"""

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

tkihira

var fs = require("fs");
var path = require("path");

var rmdir = function(dir) {
	var list = fs.readdirSync(dir);
	for(var i = 0; i < list.length; i++) {
		var filename = path.join(dir, list[i]);
		var stat = fs.statSync(filename);
		
		if(filename == "." || filename == "..") {