Add memoization

framer/Utils.coffee

@@ -120,6 +120,18 @@ Utils.throttle = (delay, fn) ->
		setTimeout (-> timer = false), delay unless delay is -1
		fn arguments...

# Taken from http://addyosmani.com/blog/faster-javascript-memoization/
Utils.memoize = (fn) -> ->
	args = Array::slice.call(arguments)
	hash = ""
	i = args.length
	currentArg = null
	while i--
		currentArg = args[i]
		hash += (if (currentArg is Object(currentArg)) then JSON.stringify(currentArg) else currentArg)
		fn.memoize or (fn.memoize = {})
	(if (hash of fn.memoize) then fn.memoize[hash] else fn.memoize[hash] = fn.apply(this, args))


######################################################
# HANDY FUNCTIONS