ElliotChong’s gists

ElliotChong / fighting-Insanity.md

Last active August 29, 2015 14:17 — forked from megamaddu/fighting-insanity.md

================

If your language works like this by default..

var x = {a: 5};
var y = {a: 5};
x === y; // => false

ElliotChong / Highlander.js

Last active August 29, 2015 14:14

When you're the only script that should work on a page.

	var HighlanderJS = (function (immortals) {
	var highlander = {};
	for (var immortal in immortals) {
	highlander[immortal] = immortals[immortal];
	delete immortals[immortal];
	}

	immortals.HighlanderJS = function (onlyOne) {
	onlyOne.apply(highlander);
	};

ElliotChong / benchmark.coffee

Created August 19, 2014 20:00

Super quick and very dirty memory benchmark of Immutable JS.

	heapdump = require "heapdump"
	Immutable = require "immutable"

	pixels = 256 * 256
	iterations = 1000

	# Immutable
	testImmutable = ->
	# Simulate a pixel grid
	grid = Immutable.Vector()

ElliotChong / OUTPUT.md

Last active December 29, 2015 14:49

HTML sanitization script that ignores brackets within <script> tags. Tested in V8- Will need the forEach methods swapped out to work in legacy JS runtimes.

    ✓	 Bar

✓	 A &lt;p&gt;Baz!&lt;/p&gt; B

✓	 &lt;p&gt;Foo&lt;/p&gt; &lt;script&gt; a < b; &lt;/script&gt; &lt;span&gt;Blam!&lt;/span&gt;

✓	 &lt;p&gt;Foo&lt;/p&gt; &lt;script type='text/javascript'&gt; a < b || c > d; &lt;/script&gt; &lt;span&gt;Blam!&lt;/span&gt;

✓ D &lt;p&gt;Foo&lt;/p&gt; &lt;script type='text/javascript'&gt;$('body').append('&lt;' + 'script&gt; a &lt; b; &lt;' + '/script&gt;');&lt;/script&gt; &lt;span&gt;Blam!&lt;/span&gt; F &lt;b&gt;O&lt;/b&gt;

ElliotChong / Gruntfile.coffee

Created November 14, 2013 17:20

Example Gruntfile showing concurrent CoffeeScript > JS > minification, SASS > CSS > minification, livereload, and nodemon / nodeinspector tandem.

	module.exports = (grunt) ->
	config =
	browserify:
	development:
	options:
	transform: ["coffeeify"]
	debug: true
	files:
	"./public/scripts/editor.js": ["./frontend/scripts/editor.coffee"]
	uglify:

ElliotChong / KineticJS-PixelRatio_Override.coffee

Last active December 20, 2015 09:29

KineticJS automatically detects the current device's pixel ratio and renders graphics accordingly so that they will be as crisp as possible on high DPI displays. Sometimes you'd like to opt for a less precise (fuzzier) rendering but higher average framerate, this gist will give you that control.

	# Adjust device pixel ratio
	setMaximumPixelRatio = (p_maximumRatio=1) ->
	canvas = document.createElement('canvas')
	context = canvas.getContext('2d')
	devicePixelRatio = window.devicePixelRatio \|\| 1
	backingStoreRatio = context.webkitBackingStorePixelRatio \|\| context.mozBackingStorePixelRatio \|\| context.msBackingStorePixelRatio \|\| context.oBackingStorePixelRatio \|\| context.backingStorePixelRatio \|\| 1
	pixelRatio = devicePixelRatio / backingStoreRatio

	for className in ["HitCanvas", "SceneCanvas", "Canvas"]
	Kinetic[className].prototype.init = ((p_method) -> (p_config={}) ->

ElliotChong / pixi-graphics-additions.coffee

Last active December 20, 2015 02:59

Adds drawArc, drawRoundRect, and drawSlice methods to Pixi.js's Graphics object.

	toRad = (p_angle) ->
	return (p_angle - 90) * Math.PI / 180

	for method in ["drawArc", "drawRoundRect", "drawSlice"]
	if PIXI.Graphics.prototype[method]? then console.warn "PixiJS already has an #{method} method defined. It's recommended that you update your code to use the official implementation."

	PIXI.Graphics.prototype.drawArc = (p_x, p_y, p_radius, p_startAngle, p_endAngle) ->
	totalAngle = p_endAngle - p_startAngle
	segments = Math.ceil Math.abs(Math.sqrt(1 - Math.pow (1 - Math.min(p_radius / 60, 1)), 2) * totalAngle * p_radius * 0.01)
	anglePerSegment = totalAngle / segments

ElliotChong / outbound-link-tracking.html

Last active December 15, 2015 18:58

Adding Outbound Link Tracking With Google Analytics

	<head>

	<!-- Rest of the <head> content here -->

	<!-- Include jQuery -->
	<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
	</head>
	<body>

	<!-- Rest of the <body> content here -->

ElliotChong / underscore.mixin.deepExtend.coffee

Last active November 28, 2020 23:55

Copy all of the properties in the source objects over to the destination object, and return the destination object. This method will recursively copy mutual properties which are also objects.

	# Create a deep copy of an object. - CoffeeScript conversion of @cederberg's deepClone implementation https://github.com/documentcloud/underscore/pull/595
	deepClone = (obj) ->
	if !_.isObject(obj) or _.isFunction(obj) then return obj
	if _.isDate obj then return new Date do obj.getTime
	if _.isRegExp obj then return new RegExp obj.source, obj.toString().replace(/.*\//, "")

	isArr = _.isArray obj or _.isArguments obj

	func = (memo, value, key) ->
	if isArr then memo.push deepClone value

ElliotChong / facebookPluginDirectives.coffee

Created October 9, 2012 05:45

Angular directives that will parse Facebook plugins added to the DOM after Facebook has been initialized

	module = angular.module 'FacebookPluginDirectives', []

	createDirective = (name) ->
	module.directive name, ->
	restrict: 'C'
	link: (scope, element, attributes) ->
	FB?.XFBML.parse(element.parent()[0])

	createDirective pluginName for pluginName in ['fbActivity', 'fbComments', 'fbFacepile', 'fbLike', 'fbLikeBox', 'fbLiveStream', 'fbLoginButton', 'fbName', 'fbProfilePic', 'fbRecommendations']

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