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/**
 * Calculates the Damerau-Levenshtein distance between two strings.
 */
function distance(source, target) {
    if (!source) return target ? target.length : 0;
    else if (!target) return source.length;

    var m = source.length, n = target.length, INF = m+n, score = new Array(m+2), sd = {};
    for (var i = 0; i < m+2; i++) score[i] = new Array(n+2);
    score[0][0] = INF;

IceCreamYou

/**
 * The Layer object (basically a new, utility canvas).
 *
 * Layers allow efficient rendering of complex scenes by acting as caches for
 * parts of the scene that are grouped together. For example, it is recommended
 * to create a Layer for your canvas's background so that you can render the
 * background once and then draw the completely rendered background onto the
 * main canvas in each frame instead of re-computing the background for each
 * frame. This can significantly speed up animation.
 *

IceCreamYou

// performance.now() shim
window.performance = window.performance || {};
performance.now = (function() {
  return performance.now       ||
         performance.mozNow    ||
         performance.msNow     ||
         performance.oNow      ||
         performance.webkitNow ||
         function() { return Date.now(); };
})();

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/**
 * Execute a collection of tasks together at a later time.
 *
 * This is occasionally useful when animating a lot of primitives on a Canvas
 * since batching certain operations that change the canvas state can
 * significantly improve drawing time (especially in older browsers).
 */
function Batch(before, after) {
  var tasks = [];
  this.addTask = function(task) {

IceCreamYou

/**
 * Get an array containing the text nodes within a DOM node.
 *
 * Modified from http://stackoverflow.com/a/4399718/843621
 *
 * @param node Any DOM node.
 * @param [includeWhitespaceNodes=false] Whether to include whitespace-only nodes.
 * @param [recurse=false] Whether to get all nodes (true) or only the immediate child nodes (false).
 * @return An array containing TextNodes.
 */

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/**
 * @param lo The closest previous input below the current input
 * @param hi The closest previous input above the current input
 * @param loPos The position of lo
 * @param hiPos The position of hi
 * @param input The current input
 * @return The optimal position for input
 */
function optimalGuess(lo, hi, loPos, hiPos, input) {
  // Track the best values

IceCreamYou

// e.g. round(3.456, 1) -> 3.5
Number.prototype.round = function(v, a) {
  if (typeof a === 'undefined') {
    a = v;
    v = this;
  }
  if (!a) a = 0;
  var m = Math.pow(10,a|0);
  return Math.round(v*m)/m;
};

IceCreamYou

/**
 * Periodically log a message to the JavaScript console.
 *
 * This is useful for logging things in loops; it avoids being overwhelmed by
 * an unstoppable barrage of similar log messages. Example calls:
 *
 * # Log "message" to the console no more than every 500ms.
 * logPeriodically('message', 500);
 * # Log "message" as an error no more than every 500ms.
 * logPeriodically('message', 500, console.error);

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<script type="text/javascript" src="https://raw.github.com/dglittle/smiley-slider/master/smiley-slider.js"></script>
<script>
jQuery(document).ready(function() {
    var s = new SmileySlider(document.getElementById("slider"), 'https://github.com/dglittle/smiley-slider/raw/master/smiley-slider.png');
    s.position(0.5);
    s.position(function (p) {
        jQuery('.smiley-slider').val(Math.round(p*10));
    });

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// Basically copied directly from http://www.catswhocode.com/blog/using-keyboard-shortcuts-in-javascript
var isCtrl = false;
$(document).keyup(function (e) {
  if (e.which == 17)
    isCtrl = false;
}).keydown(function (e) {
  if (e.which == 17)
    isCtrl = true;
  if (e.which == 83 && isCtrl == true) {
    $('#searchbox').focus().select();