fun : [`a, `b] (`a -> `b) * `a -> `b
    apply ((f : `a -> `b), (x : `a)) = f (x)

fun : [`a, `b, `c] (`a -> `b -> `c) -> (`a * `b -> `c)
    curry (f : `a -> `b -> `c) =
    fun : `a * `b -> `c
        fc ((x :`a), (y : `b)) = (f (x)) (y);
    fc

fun : [`a, `b, `c] (`a * `b -> `c) -> (`b -> `a -> `c)
    uncurry  (f : `a * `b -> `c) =
    fun : `a -> `b -> `c
      fu (x : `a) =
      (fun : `b -> `c
       g (y : `b) = f (x, y);
      g);
    fu

fun : int -> int
   id_int (x : int) = x

let main : int =
   (curry<int -> int, int, int> (uncurry<int -> int, int, int> (apply<int, int>))) (id_int, 37)