for_se : int -> int -> (int -> unit) -> unit
- let val A = Array.array(26,#" ")
  in
     for_se 0 25 (fn i => Array.update(A,i, Char.chr (i+97)))
   ; for_se 0 25 (print o Char.toString o curry Array.sub A)
   ; print "\n"
  end;
abcdefghijklmnopqrstuvwxyz
> val it = () : unit