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// Simulate a call to Dropbox or other service that can
// return an image as an ArrayBuffer.
var xhr = new XMLHttpRequest();

// Use JSFiddle logo as a sample image to avoid complicating
// this example with cross-domain issues.
xhr.open( "GET", "http://fiddle.jshell.net/img/logo.png", true );

// Ask for the result as an ArrayBuffer.
xhr.responseType = "arraybuffer";

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Unicode table - List of most common Unicode characters *
* This summary list contains about 2000 characters for most common ocidental/latin languages and most printable symbols but not chinese, japanese, arab, archaic and some unprintable.
Contains character codes in HEX (hexadecimal), decimal number, name/description and corresponding printable symbol.
What is Unicode?

Unicode is a standard created to define letters of all languages ​​and characters such as punctuation and technical symbols. Today, UNICODE (UTF-8) is the most used character set encoding (used by almost 70% of websites, in 2013). The second most used character set is ISO-8859-1 (about 20% of websites), but this old encoding format is being replaced by Unicode.
How to identify the Unicode number for a character?

Type or paste a character: 

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git cherry -v

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From: http://stackoverflow.com/questions/17034941/how-to-create-multiple-files-with-random-data-with-bash

You can do it with a shell for loop:

for i in {1..20000}; do dd if=/dev/urandom bs=1 count=1 of=file$i; done

Adjust count and bs as necessary to make files of the size you care about. Note that I changed to /dev/urandom to prevent blocking.

You can add some >/dev/null 2>&1 to quiet it down, too.

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Jenkins, Protractor and Headless Chrome Browser Setup on Ubuntu 14.04

Update Ubuntu

sudo apt-get update
sudo apt-get upgrade

Install Java

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var b64encode = function(str) {
   return root.btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function(match, p1) {
      return String.fromCharCode('0x' + p1);
   }));
};

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Using Homebrew to manage Node.js and io.js installs on OSX

Having both Node.js and io.js installed with NVM was giving me a load of problems, mainly with npm. So I uninstalled NVM and manage Node.js and io.js with homebrew.
Heres how.

Install Node.js and io.js

$ brew install node
$ brew install iojs

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console