1 (* Copyright (C) 2000, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
28 let rec list_sub_strict f l1 l2 = match l1, l2 with
30 | _ :: tl1, _ :: tl2 -> list_sub_strict f tl1 tl2
33 let rec list_fold_left f map a = function
36 let f a = list_fold_left f map a tl in
39 let rec list_rev_map_append f map ~tail = function
42 let f hd = list_rev_map_append f map ~tail:(hd :: tail) tl in
45 let list_rev_append f =
46 list_rev_map_append f (fun f t -> f t)
49 list_rev_map_append ~tail:[]
52 list_rev_append ~tail:[]
55 list_rev_map (list_rev f)