Axel Anderson axelav

Implementation of the Luhn 10 algorithm to check validity of credit card numbers. See http://en.wikipedia.org/wiki/Luhn_algorithm for details on the algorithm.

var validCreditCard = function(a,b,c,d,e){for(d=+a[b=a.length-1],e=0;b--;)c=+a[b],d+=++e%2?2*c%10+(c>4):c;return!(d%10)};

validCreditCard('378282246310005'); //=> true
validCreditCard('378282246310006'); //=> false

// some numbers to test with
// 378282246310005 371449635398431 378734493671000

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

	The regex patterns in this gist are intended to match any URLs,
	including "mailto:[email protected]", "x-whatever://foo", etc. For a
	pattern that attempts only to match web URLs (http, https), see:
	https://gist.github.com/gruber/8891611


	# Single-line version of pattern:

	(?i)\b((?:[a-z][\w-]+:(?:/{1,3}\|[a-z0-9%])\|www\d{0,3}[.]\|[a-z0-9.\-]+[.][a-z]{2,4}/)(?:[^\s()<>]+\|\(([^\s()<>]+\|(\([^\s()<>]+\)))\))+(?:\(([^\s()<>]+\|(\([^\s()<>]+\)))\)\|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))

	" Vim syntax file
	" Language: HTML (version 5)
	" Maintainer: Rodrigo Machado <[email protected]>
	" URL: http://rm.blog.br/vim/syntax/html.vim
	" Last Change: 2009 Aug 19
	" License: Public domain
	" (but let me know if you liked it :) )
	"
	" Note: This file just adds the new tags from HTML 5
	" and don't replace default html.vim syntax file

	// ----------------------------------------------------------
	// A short snippet for detecting versions of IE in JavaScript
	// without resorting to user-agent sniffing
	// ----------------------------------------------------------
	// If you're not in IE (or IE version is less than 5) then:
	// ie === undefined
	// If you're in IE (>=5) then you can determine which version:
	// ie === 7; // IE7
	// Thus, to detect IE:
	// if (ie) {}

	// 1: how could you rewrite the following to make it shorter?
	if (foo) {
	bar.doSomething(el);
	} else {
	bar.doSomethingElse(el);
	}

	/jslint undef: true, nomen: true, eqeqeq: true, plusplus: true, newcap: true, immed: true, browser: true, devel: true, passfail: false /
	/global window: false, readConvertLinksToFootnotes: false, readStyle: false, readSize: false, readMargin: false, Typekit: false, ActiveXObject: false /

	var dbg = (typeof console !== 'undefined') ? function(s) {
	console.log("Readability: " + s);
	} : function() {};

	/*
	* Readability. An Arc90 Lab Experiment.
	* Website: http://lab.arc90.com/experiments/readability

	/**********************************************/
	/*
	/* Solarized Dark Skin by Mark Osborne - 2011
	/*
	/* Based on IR_Black Skin by Ben Truyman:
	/* https://gist.github.com/1245727
	/*
	/* and Todd Werth's IR_Black:
	/* http://blog.toddwerth.com/entries/2
	/*

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 Timo Kissing http://kissing.name

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

	increment = do ->
	x = 0
	->
	x++