Reason · Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.

sig
 type ('k, 'd) t
 val make : 'k -> 'd -> ('k, 'd) Ephemeron.K1.t
 val query : ('k, 'd) Ephemeron.K1.t -> 'k -> 'd option
 module Make :
  functor (H : Hashtbl.HashedType) ->
   sig
    type key = H.t
    type !'a t
    val create : int -> 'a t
    val clear : 'a t -> unit
    val reset : '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_opt : 'a t -> key -> 'a option
    val find_all : 'a t -> key -> 'a list
    val replace : 'a t -> key -> 'a -> unit
    val mem : 'a t -> key -> bool
    val length : 'a t -> int
    val stats : 'a t -> Hashtbl.statistics
    val add_seq : 'a t -> (key * 'a) Seq.t -> unit
    val replace_seq : 'a t -> (key * 'a) Seq.t -> unit
    val of_seq : (key * 'a) Seq.t -> 'a t
    val clean : 'a t -> unit
    val stats_alive : 'a t -> Hashtbl.statistics
   end
 module MakeSeeded :
  functor (H : Hashtbl.SeededHashedType) ->
   sig
    type key = H.t
    type !'a t
    val create : ?random:bool -> int -> 'a t
    val clear : 'a t -> unit
    val reset : '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_opt : 'a t -> key -> 'a option
    val find_all : 'a t -> key -> 'a list
    val replace : 'a t -> key -> 'a -> unit
    val mem : 'a t -> key -> bool
    val length : 'a t -> int
    val stats : 'a t -> Hashtbl.statistics
    val add_seq : 'a t -> (key * 'a) Seq.t -> unit
    val replace_seq : 'a t -> (key * 'a) Seq.t -> unit
    val of_seq : (key * 'a) Seq.t -> 'a t
    val clean : 'a t -> unit
    val stats_alive : 'a t -> Hashtbl.statistics
   end
 module Bucket :
  sig
   type ('k, 'd) t
   val make : unit -> ('k, 'd) Ephemeron.K1.Bucket.t
   val add : ('k, 'd) Ephemeron.K1.Bucket.t -> 'k -> 'd -> unit
   val remove : ('k, 'd) Ephemeron.K1.Bucket.t -> 'k -> unit
   val find : ('k, 'd) Ephemeron.K1.Bucket.t -> 'k -> 'd option
   val length : ('k, 'd) Ephemeron.K1.Bucket.t -> int
   val clear : ('k, 'd) Ephemeron.K1.Bucket.t -> unit
  end
end