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(***************************************************************************)
(* This is part of aac_tactics, it is distributed under the terms of the *)
(* GNU Lesser General Public License version 3 *)
(* (see file LICENSE for more details) *)
(* *)
(* Copyright 2009-2010: Thomas Braibant, Damien Pous. *)
(***************************************************************************)
(** Search monad that allows to express non-deterministic algorithms
in a legible maner, or programs that solve combinatorial problems.
@see <http://spivey.oriel.ox.ac.uk/mike/search-jfp.pdf> the
inspiration of this module
*)
(** A data type that represent a collection of ['a] *)
type 'a m
(** {2 Monadic operations} *)
(** bind and return *)
val ( >> ) : 'a m -> ('a -> 'b m) -> 'b m
val return : 'a -> 'a m
(** non-deterministic choice *)
val ( >>| ) : 'a m -> 'a m -> 'a m
(** failure *)
val fail : unit -> 'a m
(** folding through the collection *)
val fold : ('a -> 'b -> 'b) -> 'a m -> 'b -> 'b
(** {2 Derived facilities } *)
val sprint : ('a -> string) -> 'a m -> string
val count : 'a m -> int
val choose : 'a m -> 'a option
val to_list : 'a m -> 'a list
val sort : ('a -> 'a -> int) -> 'a m -> 'a m
val is_empty: 'a m -> bool
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