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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) *)
(************************************************************************)
open Hashtbl
module type PHashtable =
sig
type 'a t
type key
val open_in : string -> 'a t
(** [open_in f] rebuilds a table from the records stored in file [f].
As marshaling is not type-safe, it might segfault.
*)
val find : 'a t -> key -> 'a
(** find has the specification of Hashtable.find *)
val add : 'a t -> key -> 'a -> unit
(** [add tbl key elem] adds the binding [key] [elem] to the table [tbl].
(and writes the binding to the file associated with [tbl].)
If [key] is already bound, raises KeyAlreadyBound *)
val memo : string -> (key -> 'a) -> (key -> 'a)
(** [memo cache f] returns a memo function for [f] using file [cache] as persistent table.
Note that the cache will only be loaded when the function is used for the first time *)
end
module PHashtable(Key:HashedType) : PHashtable with type key = Key.t
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