app/assets/javascripts/utilities/uuid.coffee
class App.UUID
@generate = ->
d = new Date().getTime()
uuid = "xxxxxxxx-xxxx-4xxx-xxxx-xxxxxxxxxxxx".replace(/[xy]/g, (c) ->
r = (d + Math.random() * 16) % 16 | 0
d = Math.floor(d / 16)
((if c is "x" then r else (r & 0x7 | 0x8))).toString 16
)
uuid