package ppx_deriving

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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, _) t -> 'a Seq.t
val to_seq_values : (_, '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 (H : HashedType) : S with type key = H.t and type 'a t = 'a Hashtbl.Make(H).t
module MakeSeeded (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
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