/
batPair.ml
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/
batPair.ml
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(*
* Pair - functions for pairs of values
* Copyright (C) 2003 Nicolas Cannasse
* 2008 David Teller (Contributor)
*
* This library 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; either
* version 2.1 of the License, or (at your option) any later version,
* with the special exception on linking described in file LICENSE.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
type ('a,'b) t = 'a * 'b
let map f (x,y) = (f x, f y)
let compare ?(c1=Pervasives.compare) ?(c2=Pervasives.compare) (a,b) (c,d) =
let comp = c1 a c in
if comp <> 0 then comp else c2 b d
let enum (x,y) = BatList.enum [x;y] (* Make efficient? *)
let of_enum e = match BatEnum.get e with
None -> failwith "Pair.of_enum: not enough elements"
| Some x -> match BatEnum.get e with
None -> failwith "Pair.of_enum: not enough elements"
| Some y -> (x,y)
let print print_a print_b out (a,b) =
BatIO.write out '(';
print_a out a;
BatIO.write out ',';
print_b out b;
BatIO.write out ')'