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(*
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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 module type of Containers.Option
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type 'a t = 'a option [@@deriving compare, equal, hash, sexp]
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val pp : ('a_pp -> 'a -> unit, unit) fmt -> 'a_pp -> 'a option pp
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val map : 'a t -> f:('a -> 'b) -> 'b t
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val map_or : 'a t -> default:'b -> f:('a -> 'b) -> 'b
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val bind : 'a t -> f:('a -> 'b t) -> 'b t
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val iter : 'a t -> f:('a -> unit) -> unit
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val exists : 'a t -> f:('a -> bool) -> bool
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val for_all : 'a t -> f:('a -> bool) -> bool
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val fold : 'a t -> init:'s -> f:('s -> 'a -> 's) -> 's
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