PatrickJS

var getElementsByClassName = function(className) {
var element = arguments[1] || document.body,
    results = [],
    has_class_name = [].indexOf.call(element.classList, className) !== -1,
    children_results = [].map.call(element.children, function(element) {
      return getElementsByClassName(className,element)[0];
    }).filter(Boolean);

if (has_class_name) {
  results.push(element);

PatrickJS

data:text/html, <style type="text/css">#e{position:absolute;top:0;right:0;bottom:0;left:0;}</style><div id="e"></div><script src="http://d1n0x3qji82z53.cloudfront.net/src-min-noconflict/ace.js" type="text/javascript" charset="utf-8"></script><script>var e=ace.edit("e");e.setTheme("ace/theme/monokai");e.getSession().setMode("ace/mode/ruby");</script>

PatrickJS

function addf(x) {
  return function(y) {
    return x + y;
  }
}

addf(3)(4)

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

PatrickJS

function applyf(binary) {
  return function(x) {
    return function(y) {
      return binary(x, y);
    };
  };
}

addf = applyf(add);
addf(3)(4) //=> 7

PatrickJS

function parse_git_branch {
  ref=$(git symbolic-ref HEAD 2> /dev/null) || return
  echo "git:("${ref#refs/heads/}$(num_git_commits_ahead)")"
}

function num_git_commits_ahead {
    num=$(git status 2> /dev/null \
      | grep "Your branch is ahead of" \
      | awk '{split($0,a," "); print a[9];}' 2> /dev/null) || return
    if [[ "$num" != "" ]]; then

PatrickJS

Array.prototype.last = function(n) {
  if (n === undefined) {
    return this[this.length-1];
  }
  var answers = [];
    for(var i = this.length-1; i>this.length-n-1;i-=1){
      answers.unshift(this[i]);
    }
  return answers;
}

PatrickJS

String.prototype.reverse = function() {
  return this.split("").reverse().join("")
}

PatrickJS

<script src="//ajax.aspnetcdn.com/ajax/jquery/jquery-2.0.0.min.js"></script>
<script>window.jQuery || document.write('<script type="text/javascript" src="scripts/jquery-ui-1.8.24.js"><\/script'')</script>

PatrickJS

// Super-optimised version of FizzBuzz
var array = [];
array[3] = array[6] = array[9] = array[12] = "Fizz<br>";
array[5] = array[10] = "Buzz<br>";
array[0] = "FizzBuzz<br>";
var str = "";

for( var i=1; i<=100; ++i) {
   str += array[ i%15 ] || i + "<br>";
}

PatrickJS

Append an array to another array

var a = [4,5,6];
var b = [7,8,9];
[].push.apply(a, b);

uneval(a); // is: [4, 5, 6, 7, 8, 9]