Cache.Cache
module OO : SetMap.OrderedType
module O : SetMap.OrderedType with type t = OO.t
type t
val last : t -> O.t option
val create : int option -> t
val add : O.t -> t -> t
val fold : (O.t -> 'a -> 'a) -> t -> 'a -> 'a
val iter : (O.t -> unit) -> t -> unit