a python-like decorator in coffee script

decorator.coffee

timing = (msg) -> (method) -> ->
  startTime = (new Date()).getTime()
  ret = method.apply @, arguments
  duration = (new Date()).getTime() - startTime
  msg = if msg then msg else ''
  console.log '[timing] ' + msg + ': ' + duration / 1000.0
  ret

consumeTime = timing('hello') ->
  s = 0
  for i in [0..100000000]
    s += 1
  s

console.log consumeTime()