tzList.mli
(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
(* *)
(* Permission is hereby granted, free of charge, to any person obtaining a *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included *)
(* in all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(*****************************************************************************)
(** [remove nb list] remove the first [nb] elements from the list [list]. *)
val remove : int -> 'a list -> 'a list
(** [repeat n x] is a list of [n] [x]'s *)
val repeat : int -> 'a -> 'a list
(** [shift (hd :: tl)] computes [tl @ [hd]] *)
val shift : 'a list -> 'a list
(** [product a b] computes the Cartesian product of two lists [a] and [b]. *)
val product : 'a list -> 'b list -> ('a * 'b) list
(** [take_n n l] returns the [n] first elements of [l]. When [compare]
is provided, it returns the [n] greatest element of [l]. *)
val take_n : ?compare:('a -> 'a -> int) -> int -> 'a list -> 'a list
(** [split_n n l] is a pair of lists [(j, k)] where [j] contains the [n] first
elements of [l] and [k] the remainder elements. If [l] has less than or
exactly [n] elements, [j] is [l] and [k] is [[]]. *)
val split_n : int -> 'a list -> 'a list * 'a list
(** Bounded sequence: keep only the [n] greatest elements. *)
module Bounded (E : Set.OrderedType) : sig
type t
val create : int -> t
val insert : E.t -> t -> unit
val get : t -> E.t list
end
(** [select n l] is ([n]th element of [l], [l] without that element) *)
val select : int -> 'a list -> 'a * 'a list
(** [filter_map f l] is [[y for x in l where (f x) = Some y]] *)
val filter_map : ('a -> 'b option) -> 'a list -> 'b list
(** [rev_sub l n] is [List.rev l] capped to max [n] elements *)
val rev_sub : 'a list -> int -> 'a list
(** [sub l n] is [l] capped to max [n] elements *)
val sub : 'a list -> int -> 'a list
(** Like [List.hd], but [Some hd] or [None] if empty *)
val hd_opt : 'a list -> 'a option
(** Last elt of list, or raise Not_found if empty *)
val last_exn : 'a list -> 'a
(** [merge_filter2 ~compare ~f l1 l2] merges two lists ordered by [compare]
and whose items can be merged with [f]. Item is discarded or kept whether
[f] returns [Some] or [None] *)
val merge_filter2 :
?finalize:('a list -> 'a list) ->
?compare:('a -> 'a -> int) ->
?f:('a option -> 'a option -> 'a option) ->
'a list ->
'a list ->
'a list
(** [merge2 ~compare ~f l1 l2] merges two lists ordered by [compare] and
whose items can be merged with [f] *)
val merge2 :
?finalize:('a list -> 'a list) ->
?compare:('a -> 'a -> int) ->
?f:('a -> 'a -> 'a) ->
'a list ->
'a list ->
'a list
(** [shuffle l] is a list that contains the same elements as [l] but in a random
order. *)
val shuffle : 'a list -> 'a list