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68 lines
1.4 KiB
68 lines
1.4 KiB
7 years ago
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(*
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* Copyright (c) 2018-present, Facebook, Inc.
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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! IStd
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(*
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Lists with O(1) append and rev.
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*)
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include sig
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(* ocaml ignores the warning suppression at toplevel, hence the [include struct ... end] trick *)
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[@@@warning "-60"]
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type +'a t
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(* O(1) time and O(1) allocation *)
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val empty : 'a t
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val singleton : 'a -> 'a t
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val of_list : 'a list -> 'a t
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val cons : 'a -> 'a t -> 'a t
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val snoc : 'a t -> 'a -> 'a t
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val append : 'a t -> 'a t -> 'a t
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val rev : 'a t -> 'a t
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val is_empty : 'a t -> bool
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val is_singleton : 'a t -> 'a option
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val is_singleton_or_more : 'a t -> 'a IContainer.singleton_or_more
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(* O(1) best to O(N) worst time and allocation. Do not use in a loop, use [fold] instead. *)
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val hd_tl_exn : 'a t -> 'a * 'a t
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val front_last_exn : 'a t -> 'a t * 'a
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(* O(1) best to O(N) worst time, no allocation *)
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val hd_exn : 'a t -> 'a
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val last_exn : 'a t -> 'a
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val hd : 'a t -> 'a option
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val last : 'a t -> 'a option
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(* Theta(N) time, 0 best to Theta(N) worst allocation *)
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val fold_left : ('a t, 'a, 'accum) Container.fold
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val fold_right : ('a t, 'a, 'accum) Container.fold
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val fold_unordered : ('a t, 'a, 'accum) Container.fold
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(** Always better than [fold_left] when you do not care about the order. *)
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end
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