jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
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 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
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

hzlzh

<snippet>
    <!-- put this file in /packages/User/<Folder Name>/console_log.sublime-snippet then restart your Sublime Text 2 -->
    <content><![CDATA[console.log($1);$0]]></content>
    <tabTrigger>conl</tabTrigger>
    <scope>text.html,source.js</scope>
    <description>console.log()</description>
</snippet>

<snippet>
    <!-- put this in another file /packages/User/<Folder Name>/console_dir.sublime-snippet then restart your Sublime Text 2 -->

Mithrandir0x

// Source: https://groups.google.com/forum/#!topic/angular/hVrkvaHGOfc
// jsFiddle: http://jsfiddle.net/pkozlowski_opensource/PxdSP/14/
// author: Pawel Kozlowski

var myApp = angular.module('myApp', []);

//service style, probably the simplest one
myApp.service('helloWorldFromService', function() {
    this.sayHello = function() {
        return "Hello, World!"

paulirish

Learn JavaScript concepts with the Chrome DevTools

Authored by Peter Rybin , Chrome DevTools team

In this short guide we'll review some new Chrome DevTools features for "function scope" and "internal properties" by exploring some base JavaScript language concepts.

Closures

Let's start with closures – one of the most famous things in JS. A closure is a function, that uses variables from outside. See an example:

stevenwoodson

<?php  if (! defined('BASEPATH')) exit('No direct script access allowed');

class MY_DB_mysql_driver extends CI_DB_mysql_driver {

	final public function __construct($params) {
		parent::__construct($params);
	}

	/**
	 * Insert_On_Duplicate_Update_Batch

phette23

# put this in your .bash_profile
if [ $ITERM_SESSION_ID ]; then
  export PROMPT_COMMAND='echo -ne "\033];${PWD##*/}\007"; ':"$PROMPT_COMMAND";
fi

# Piece-by-Piece Explanation:
# the if condition makes sure we only screw with $PROMPT_COMMAND if we're in an iTerm environment
# iTerm happens to give each session a unique $ITERM_SESSION_ID we can use, $ITERM_PROFILE is an option too
# the $PROMPT_COMMAND environment variable is executed every time a command is run
# see: ss64.com/bash/syntax-prompt.html

dfkaye

These are my own commands, shortcuts, configurations for sublime text 2 on windows

There's also a really good one at http://www.sublimetext.com/forum/viewtopic.php?f=2&t=10615.


sublime text 2 documentation at 
  http://www.sublimetext.com/docs/2/


preferences

ChangJoo-Park

# If you meet install errors, see abid-hussain's comment


sudo apt-get --force-yes install build-essential openssl libreadline6 libreadline6-dev curl git-core \
zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev \
libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison
 
&&
 
\curl -L https://get.rvm.io | bash -s stable --rails --autolibs=enabled

algal

#
# A CORS (Cross-Origin Resouce Sharing) config for nginx
#
# == Purpose
#
# This nginx configuration enables CORS requests in the following way:
# - enables CORS just for origins on a whitelist specified by a regular expression
# - CORS preflight request (OPTIONS) are responded immediately
# - Access-Control-Allow-Credentials=true for GET and POST requests