type ('a, 'b) t = ('a, 'b) Luahash.t
val create : ('a -> 'a -> bool) -> int -> ('a, 'b) t
val population : ('a, 'b) t -> int
val clear : ('a, 'b) t -> unit
val find : ('a, 'b) t -> 'a -> 'b
val find_all : ('a, 'b) t -> 'a -> 'b list
val mem : ('a, 'b) t -> 'a -> bool
val remove : ('a, 'b) t -> 'a -> unit
val replace : ('a, 'b) t -> key:'a -> data:'b -> unit
val iter : ('a -> 'b -> unit) -> ('a, 'b) t -> unit
val first : ('a, 'b) t -> 'a * 'b
val next : ('a, 'b) t -> 'a -> 'a * 'b
val hash : 'a -> int