Hc.SThe output signature of the various functors Make, MakeStrong, Fake and Mk.
val hashcons : key -> key hash_consedhashcons v hash-cons the value v, i.e. returns any existing value equal to v that has already been hash-consed, if any; otherwise, allocates a new hash-consed value with v as a node and returns it. As a consequence the returned value is physically equal to any equal value already hash-consed.
val stats : unit -> Hashtbl.statisticsReturn statistics about the hash-consing table.