hash_set.ml

(* OCamlScript compiler
 * Copyright (C) 2015-2016 Bloomberg Finance L.P.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, with linking exception;
 * either version 2.1 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser 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.
 *)

(* Author: Hongbo Zhang  *)



include Hashtbl 

(* type nonrec t = unit t  *)

type  'a hashset = ('a,unit) Hashtbl.t

let add tbl k  = replace tbl k ()
(* use [Hashtbl.replace] instead  *)

(* let replace tbl k  = replace tbl k () *)
let iter f = iter (fun k _ -> f k )

let elements set = 
  fold  (fun k _ acc ->  k :: acc) set []