gistfile1.coffee

do slow_loop = ->
    setTimeout slow_loop, 500 unless confirm 'Stop looping?'

#
# Is compiled to
#       \/

`
(function() {
  var slow_loop;
  (slow_loop = function() {
    if (!confirm('Stop looping?')) {
      return setTimeout(slow_loop, 500);
    }
  })();
}).call(this);
`