Dither

// JavaScript function for converting simple XPath to CSS selector.
// Ported by Dither from [cssify](https://github.com/santiycr/cssify)
// Example: `cssify('//div[@id="girl"][2]/span[@class="body"]//a[contains(@class, "sexy")]//img[1]')`

var sub_regexes = {
    "tag": "([a-zA-Z][a-zA-Z0-9]{0,10}|\\*)",
    "attribute": "[.a-zA-Z_:][-\\w:.]*(\\(\\))?)",
    "value": "\\s*[\\w/:][-/\\w\\s,:;.]*"
};

maxrice

<?php

/* From https://www.usps.com/send/official-abbreviations.htm */

$us_state_abbrevs_names = array(
	'AL'=>'ALABAMA',
	'AK'=>'ALASKA',
	'AS'=>'AMERICAN SAMOA',
	'AZ'=>'ARIZONA',
	'AR'=>'ARKANSAS',

ericrasch

Solid Base .htaccess

Creating a solid base for your .htaccess file. Currently includes RewriteBase, Security (against indexes, files, etc.), and Expires Headers (caching, performance).

• The URL REWRITES would go at the top of the file.
• The SECURITY and the WEB PERFORMANCE can go towards the bottom... before and WordPress or WP Super Cache items.
• UPDATE 2013-08-21: Added code for forcing either non-www or www. on URLs. Also added the MultiViews option.
• UPDATE 2013-08-23: Added specific code for wp-config.php
• UPDATE 2013-10-04: Increased favicon expire time.
• UPDATE 2014-02-05: Removed the Force URL rewrites since there's more than one option.

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

seboudry

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
L2 cache reference ........................... 7 ns                     14x L1 cache
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns                     20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs 4X memory

akras14

Git Cheat Sheet

Commands

Getting Started

git init

or

DmitrySoshnikov

@kangax's ES6 quiz, explained

@kangax created a new interesting quiz, this time devoted to ES6 (aka ES2015). I found this quiz very interesting and quite hard (made myself 3 mistakes on first pass).

Here we go with the explanations:

Question 1:

(function(x, f = () => x) {

pwnall

sudo mkdir -p /usr/share/fonts/opentype
sudo mkdir -p /usr/share/fonts/truetype

sudo dnf install -y ipa-gothic-fonts ipa-pgothic-fonts ipa-mincho-fonts ipa-pmincho-fonts
sudo mkdir -p /usr/share/fonts/opentype/ipafont-gothic
sudo cp /usr/share/fonts/ipa-gothic/ipag.ttf /usr/share/fonts/opentype/ipafont-gothic/
sudo cp /usr/share/fonts/ipa-pgothic/ipagp.ttf /usr/share/fonts/opentype/ipafont-gothic/
sudo mkdir -p /usr/share/fonts/opentype/ipafont-mincho
sudo cp /usr/share/fonts/ipa-mincho/ipam.ttf /usr/share/fonts/opentype/ipafont-mincho/
sudo cp /usr/share/fonts/ipa-pmincho/ipamp.ttf /usr/share/fonts/opentype/ipafont-mincho/