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Quellcode-Bibliothek© Kompilation durch diese Firma[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]Datei: sos.C Sprache: SMLOriginal von: Coq© |
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(* * The Coq Proof Assistant / The Coq Development Team *) (* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) (* <O___,, * (see CREDITS file for the list of authors) *) (* \VV/ **************************************************************) (* // * This file is distributed under the terms of the *) (* * GNU Lesser General Public License Version 2.1 *) (* * (see LICENSE file for the text of the license) *) (************************************************************************) (** This module implements an "untyped store", in this particular case we see it as an extensible record whose fields are left unspecified. ***) (** We use a dynamic "name" allocator. But if we needed to serialise stores, we might want something static to avoid troubles with plugins order. *) module type S = sig type t type 'a field val field : unit -> 'a field val empty : t val set : t -> 'a field -> 'a -> t val get : t -> 'a field -> 'a option val remove : t -> 'a field -> t val merge : t -> t -> t end module Make() : S = struct module Dyn = Dyn.Make() module Map = Dyn.Map(struct type 'a t = 'a end) type t = Map.t type 'a field = 'a Dyn.tag let next = ref 0 let field () = let f = Dyn.anonymous !next in incr next; f let empty = Map.empty let set s f v = Map.add f v s let get s f = try Some (Map.find f s) with Not_found -> None let remove s f = Map.remove f s let merge s1 s2 = Map.fold (fun (Map.Any (f, v)) s -> Map.add f v s) s1 s2 end ¤ Dauer der Verarbeitung: 0.1 Sekunden (vorverarbeitet) ¤ |
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