# Module MoreLabels.Hashtbl

    module Hashtbl: sig .. end

    type ('a, 'b) t = ('a, 'b) Hashtbl.t

    val create : ?random:bool -> int -> ('a, 'b) t

    val clear : ('a, 'b) t -> unit

    val reset : ('a, 'b) t -> unit

    val copy : ('a, 'b) t -> ('a, 'b) t

    val add : ('a, 'b) t -> key:'a -> data:'b -> unit

    val find : ('a, 'b) t -> 'a -> 'b

    val find_opt : ('a, 'b) t -> 'a -> 'b option

    val find_all : ('a, 'b) t -> 'a -> 'b list

    val mem : ('a, 'b) t -> 'a -> bool

    val remove : ('a, 'b) t -> 'a -> unit

    val replace : ('a, 'b) t -> key:'a -> data:'b -> unit

    val iter : f:(key:'a -> data:'b -> unit) -> ('a, 'b) t -> unit

    val filter_map_inplace : f:(key:'a -> data:'b -> 'b option) -> ('a, 'b) t -> unit

    val fold : f:(key:'a -> data:'b -> 'c -> 'c) ->
           ('a, 'b) t -> init:'c -> 'c

    val length : ('a, 'b) t -> int

    val randomize : unit -> unit

    val is_randomized : unit -> bool

    type statistics = Hashtbl.statistics

    val stats : ('a, 'b) t -> statistics

    val to_seq : ('a, 'b) t -> ('a * 'b) Seq.t

    val to_seq_keys : ('a, 'b) t -> 'a Seq.t

    val to_seq_values : ('a, 'b) t -> 'b Seq.t

    val add_seq : ('a, 'b) t -> ('a * 'b) Seq.t -> unit

    val replace_seq : ('a, 'b) t -> ('a * 'b) Seq.t -> unit

    val of_seq : ('a * 'b) Seq.t -> ('a, 'b) t

    module type HashedType = Hashtbl.HashedType

    module type SeededHashedType = Hashtbl.SeededHashedType

    module type S = sig .. end

    module type SeededS = sig .. end

    module Make: functor (H : HashedType) -> S
        with type key = H.t
         and type 'a t = 'a Hashtbl.Make(H).t

    module MakeSeeded: functor (H : SeededHashedType) -> SeededS
        with type key = H.t
         and type 'a t = 'a Hashtbl.MakeSeeded(H).t

    val hash : 'a -> int

    val seeded_hash : int -> 'a -> int

    val hash_param : int -> int -> 'a -> int

    val seeded_hash_param : int -> int -> int -> 'a -> int