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23 lines
609 B
23 lines
609 B
(*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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open! NS0
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include Containers.Option
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include Monad.Make (Containers.Option)
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type 'a t = 'a option [@@deriving compare, equal, hash, sexp]
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let pp fmt pp_elt fs = function
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| Some x -> Format.fprintf fs fmt pp_elt x
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| None -> ()
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let map_or xo ~default ~f = map_or ~default f xo
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let iter xo ~f = iter f xo
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let exists xo ~f = exists f xo
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let for_all xo ~f = for_all f xo
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let fold xo s ~f = fold (fun x s -> f s x) s xo
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