Module Hashtbl.Make

Functor building an implementation of the hashtable structure. The functor Hashtbl.Make returns a structure containing a type key of keys and a type 'a t of hash tables associating data of type 'a to keys of type key. The operations perform similarly to those of the generic interface, but use the hashing and equality functions specified in the functor argument H instead of generic equality and hashing. Since the hash function is not seeded, the create operation of the result structure always returns non-randomized hash tables.

Parameters

Signature

type key = H.t
type 'a t
val create : int -> 'a t
val clear : 'a t -> unit
val reset : 'a t -> unit
since
4.00.0
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_opt : 'a t -> key -> 'a option
since
4.05.0
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 filter_map_inplace : (key -> 'a -> 'a option) -> 'a t -> unit
since
4.03.0
val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b
val length : 'a t -> int
val stats : 'a t -> statistics
since
4.00.0
val to_seq : 'a t -> (key * 'a) Stdlib.Seq.t
since
4.07
val to_seq_keys : _ t -> key Stdlib.Seq.t
since
4.07
val to_seq_values : 'a t -> 'a Stdlib.Seq.t
since
4.07
val add_seq : 'a t -> (key * 'a) Stdlib.Seq.t -> unit
since
4.07
val replace_seq : 'a t -> (key * 'a) Stdlib.Seq.t -> unit
since
4.07
val of_seq : (key * 'a) Stdlib.Seq.t -> 'a t
since
4.07