(*
 * Copyright (c) 1997-1999 Massachusetts Institute of Technology
 * Copyright (c) 2003 Matteo Frigo
 * Copyright (c) 2003 Massachusetts Institute of Technology
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *)
(* $Id: assoctable.mli,v 1.2 2003/03/15 20:29:42 stevenj Exp $ *)

type ('a, 'b) elem =
  | Leaf
  | Node of int * ('a, 'b) elem * ('a, 'b) elem * ('a * 'b) list
val empty : ('a, 'b) elem
val lookup :
    ('a -> int) -> ('a -> 'b -> bool) -> 'a -> ('b, 'c) elem -> 'c option
val insert :
    ('a -> int) -> 'a -> 'c -> ('a, 'c) elem -> ('a, 'c) elem
