xperiments’s gists

NV / string_subclassing.js

Created January 21, 2010 12:41

JavaScript String subclassing example. Based on http://webreflection.blogspot.com/2008/10/subclassing-javascript-native-string.html

	function Markdown(value) {
	this.value = value \|\| '';
	this.length = this.value.length;
	};
	Markdown.prototype = new String;

	// Instance methods
	Markdown.prototype.toString = Markdown.prototype.valueOf = function(){return this.value};
	Markdown.prototype.toHTML = function(){return Markdown.decode(this)};

marklundin / HomographyUtil.as

Created November 1, 2010 13:37

Computes a Matrix3D homography from source and destination coplanar points

	package math{

	import flash.geom.Matrix3D;
	import flash.geom.Point;
	/**
	*
	* @author Mark Lundin
	*
	* Based upon code provided by nicoptere - http://www.nicoptere.net/AS3/homographie/blog/Homography.as
	* The findHomography now computes a Matrix3D that maps the transformation between two sets of complanar points.

dryan / supports3d.js

Created December 13, 2010 06:31

JavaScript function to detect 3D CSS transform support

	function supports3d() {
	// borrowed from modernizr
	var div = document.createElement('div'),
	ret = false,
	properties = ['perspectiveProperty', 'WebkitPerspective'];
	for (var i = properties.length - 1; i >= 0; i--){
	ret = ret ? ret : div.style[properties[i]] != undefined;
	};

	// webkit has 3d transforms disabled for chrome, though

parse / shell.c

Created May 11, 2011 07:31

Simple shell in C

	/* Compile with: g++ -Wall –Werror -o shell shell.c */

	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <ctype.h>
	#include <unistd.h>

	#include <sys/types.h>
	#include <sys/wait.h>

andrei-m / levenshtein.js

Last active October 9, 2024 10:36

Levenshtein distance between two given strings implemented in JavaScript and usable as a Node.js module

	/*
	Copyright (c) 2011 Andrei Mackenzie

	Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

rwaldron / classList.js

Created November 21, 2011 20:24 — forked from devongovett/gist:1381839

	/*
	* Minimal classList shim
	* Use with an Array.prototype.indexOf shim to support IE 8
	* Derived from work by Devon Govett
	* MIT LICENSE
	*/


	// NOT INTENDED FOR PRODUCTION USE.

n1k0 / gist:1501173

Created December 20, 2011 10:44 — forked from fbuchinger/gist:1501115

PhantomJS: Capturing single dom elements as png files

	var page = new WebPage(),
	address, output, size;

	//capture and captureSelector functions adapted from CasperJS - https://github.com/n1k0/casperjs
	capture = function(targetFile, clipRect) {
	var previousClipRect;
	var clipRect = {top: 0, left:0, width: 40, height: 40};
	if (clipRect) {
	if (!isType(clipRect, "object")) {
	throw new Error("clipRect must be an Object instance.");

lrvick / bitcolor.js

Created March 18, 2012 20:02

Javascript functions for doing fast binary/hex/RGB color conversions using bitwise operations.

	// convert 0..255 R,G,B values to binary string
	RGBToBin = function(r,g,b){
	var bin = r << 16 \| g << 8 \| b;
	return (function(h){
	return new Array(25-h.length).join("0")+h
	})(bin.toString(2))
	}

	// convert 0..255 R,G,B values to a hexidecimal color string
	RGBToHex = function(r,g,b){

ShirtlessKirk / luhn.js

Last active January 6, 2025 16:01

Luhn validation algorithm

	/**
	* Luhn algorithm in JavaScript: validate credit card number supplied as string of numbers
	* @author ShirtlessKirk. Copyright (c) 2012.
	* @license WTFPL (http://www.wtfpl.net/txt/copying)
	*/
	var luhnChk = (function (arr) {
	return function (ccNum) {
	var
	len = ccNum.length,
	bit = 1,

emilbjorklund / breakpoints_via_css.html

Created April 24, 2012 16:03

Width detection via sneaky CSS rules

	<!DOCTYPE html>
	<!--[if IE 8]> <html lang="sv-SE" class="no-js ie8"> <![endif]-->
	<!--[if gt IE 8]><!--> <html lang="sv-SE" class="no-js"> <!--<![endif]-->
	<head>
	<meta charset="UTF-8">
	<title>Breakpoint detection test</title>
	<style type="text/css" media="screen">
	@media screen and (min-width: 320px) {
	#page:after {
	content: 'smallest'; /* represent the current width-bracket */

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