sig
type key
and 'a t
val create : int -> 'a Hweak.S.t
val clear : 'a Hweak.S.t -> unit
val add : 'a Hweak.S.t -> Hweak.S.key -> 'a -> unit
val replace : 'a Hweak.S.t -> Hweak.S.key -> 'a -> unit
val remove : 'a Hweak.S.t -> Hweak.S.key -> unit
val merge : 'a Hweak.S.t -> Hweak.S.key -> 'a -> 'a
val find : 'a Hweak.S.t -> Hweak.S.key -> 'a
val find_all : 'a Hweak.S.t -> Hweak.S.key -> 'a list
val mem : 'a Hweak.S.t -> Hweak.S.key -> bool
val iter : (Hweak.S.key -> 'a -> unit) -> 'a Hweak.S.t -> unit
val fold : (Hweak.S.key -> 'a -> 'b -> 'b) -> 'a Hweak.S.t -> 'b -> 'b
val count : 'a Hweak.S.t -> int
val stats : 'a Hweak.S.t -> int * int * int * int * int * int
end