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

sig
 type ('k1, 'k2, 'd) t
 val make : unit -> ('k1, 'k2, 'd) Ephemeron.K2.Bucket.t
 val add : ('k1, 'k2, 'd) Ephemeron.K2.Bucket.t -> 'k1 -> 'k2 -> 'd -> unit
 val remove : ('k1, 'k2, 'd) Ephemeron.K2.Bucket.t -> 'k1 -> 'k2 -> unit
 val find : ('k1, 'k2, 'd) Ephemeron.K2.Bucket.t -> 'k1 -> 'k2 -> 'd option
 val length : ('k1, 'k2, 'd) Ephemeron.K2.Bucket.t -> int
 val clear : ('k1, 'k2, 'd) Ephemeron.K2.Bucket.t -> unit
end