F#-like partial function application in CoffeeScript

gistfile1.coffee

fun = (f) ->
  curry = () ->
    if (arguments.length < f.length)
      args = Array.prototype.slice.call(arguments);
      () ->
        curry.apply(this, args.concat(Array.prototype.slice.call(arguments)));
    else
      f.apply(this, arguments)


add = fun (a, b, c) -> a + b + c

console.log(add(1, 2, 3)); # 6
console.log(add(1)(2, 3)); # 6
console.log(add(1)(2)(3)); # 6
console.log(add(1, 2)(3)); # 6