You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
733 B
31 lines
733 B
(*
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*)
|
|
|
|
open! IStd
|
|
|
|
let find_value_exn = function None -> raise Caml.Not_found | Some v -> v
|
|
|
|
let value_default_f ~f = function None -> f () | Some v -> v
|
|
|
|
let if_none_evalopt ~f x = match x with None -> f () | Some _ -> x
|
|
|
|
let if_none_eval = value_default_f
|
|
|
|
let exists2 x y ~f = match (x, y) with Some x, Some y -> f x y | _, _ -> false
|
|
|
|
module Let_syntax = struct
|
|
include Option.Let_syntax
|
|
|
|
let ( let+ ) x f = Option.map ~f x
|
|
|
|
let ( and+ ) x y = Option.both x y
|
|
|
|
let ( let* ) x f = Option.bind ~f x
|
|
|
|
let ( and* ) x y = Option.both x y
|
|
end
|