module type Hashable = Hashable.Stype t
module Hashable:Twith type t = t
val hash : t -> int
val compare : t -> t -> int
val hashable : t Hashable.Hashtbl.Hashable.t
module Table:Hashable.Hashtbl.Swith type key = t
module Pooled_hashtbl:Pooled_hashtbl.Swith type key = t
module Hash_set:Hash_set.Swith type elt = t
module Hash_queue:Hash_queue.Swith type Key.t = t