`sig
type ('a, 'b) t
val create : int -> ('a, 'b) Hashtbl.t
val clear : ('a, 'b) Hashtbl.t -> unit
val add : ('a, 'b) Hashtbl.t -> 'a -> 'b -> unit
val copy : ('a, 'b) Hashtbl.t -> ('a, 'b) Hashtbl.t
val find : ('a, 'b) Hashtbl.t -> 'a -> 'b
val find_all : ('a, 'b) Hashtbl.t -> 'a -> 'b list
val mem : ('a, 'b) Hashtbl.t -> 'a -> bool
val remove : ('a, 'b) Hashtbl.t -> 'a -> unit
val replace : ('a, 'b) Hashtbl.t -> 'a -> 'b -> unit
val iter : ('a -> 'b -> unit) -> ('a, 'b) Hashtbl.t -> unit
val fold : ('a -> 'b -> 'c -> 'c) -> ('a, 'b) Hashtbl.t -> 'c -> 'c
val length : ('a, 'b) Hashtbl.t -> int
module type HashedType =
sig
type t
val equal : Hashtbl.HashedType.t -> Hashtbl.HashedType.t -> bool
val hash : Hashtbl.HashedType.t -> int
end
module type S =
sig
type key
type 'a t
val create : int -> 'a Hashtbl.S.t
val clear : 'a Hashtbl.S.t -> unit
val copy : 'a Hashtbl.S.t -> 'a Hashtbl.S.t
val add : 'a Hashtbl.S.t -> Hashtbl.S.key -> 'a -> unit
val remove : 'a Hashtbl.S.t -> Hashtbl.S.key -> unit
val find : 'a Hashtbl.S.t -> Hashtbl.S.key -> 'a
val find_all : 'a Hashtbl.S.t -> Hashtbl.S.key -> 'a list
val replace : 'a Hashtbl.S.t -> Hashtbl.S.key -> 'a -> unit
val mem : 'a Hashtbl.S.t -> Hashtbl.S.key -> bool
val iter : (Hashtbl.S.key -> 'a -> unit) -> 'a Hashtbl.S.t -> unit
val fold :
(Hashtbl.S.key -> 'a -> 'b -> 'b) -> 'a Hashtbl.S.t -> 'b -> 'b
val length : 'a Hashtbl.S.t -> int
end
module Make :
functor (H : HashedType) ->
sig
type key = H.t
type 'a t
val create : int -> 'a t
val clear : 'a t -> unit
val copy : 'a t -> 'a t
val add : 'a t -> key -> 'a -> unit
val remove : 'a t -> key -> unit
val find : 'a t -> key -> 'a
val find_all : 'a t -> key -> 'a list
val replace : 'a t -> key -> 'a -> unit
val mem : 'a t -> key -> bool
val iter : (key -> 'a -> unit) -> 'a t -> unit
val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b
val length : 'a t -> int
end
val hash : 'a -> int
external hash_param : int -> int -> 'a -> int = "caml_hash_univ_param"
"noalloc"
end`