(*
* Option - functions for the option type
* Copyright (C) 2003 Nicolas Cannasse
*
* 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
*)
exception No_value
let may f = function
| None -> ()
| Some v -> f v
let map f = function
| None -> None
| Some v -> Some (f v)
let default v = function
| None -> v
| Some v -> v
let is_some = function
| None -> false
| _ -> true
let is_none = function
| None -> true
| _ -> false
let get = function
| None -> raise No_value
| Some v -> v
let map_default f v = function
| None -> v
| Some v2 -> f v2