Module type Datatype.SET


module type SET = sig .. end
Sub-signature of Set.S.

type elt 
type t 
val descr : Unmarshal.t
val empty : t
val singleton : elt -> t
val add : elt -> t -> t
val iter : (elt -> unit) -> t -> unit
Since Beryllium-20090901
val fold : (elt -> 'a -> 'a) -> t -> 'a -> 'a