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jonypawks/gist:7192173

Created October 28, 2013 06:23
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Coffeescript UUID4
Raw
gistfile1.coffee
_random =
if crypto?.getRandomValues
-> crypto.getRandomValues(new Uint32Array(1))[0] / Math.pow(2, 32)
else
Math.random
uuid4 = ->
'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace /[xy]/g, (c) ->
u = _random() * 16 | 0
u = u & 0x3 | 0x8 if c is 'y'
u.toString 16
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