9 val is_empty : t -> bool
10 val is_any : t -> bool
11 val is_finite : t -> bool
12 val kind : t -> [ `Cofinite | `Finite ]
13 val singleton : elt -> t
14 val mem : elt -> t -> bool
15 val add : elt -> t -> t
16 val remove : elt -> t -> t
19 val diff : t -> t -> t
21 val compare : t -> t -> int
22 val subset : t -> t -> bool
23 val kind_split : t list -> t * t
24 val fold : (elt -> 'a -> 'a) -> t -> 'a -> 'a
25 val for_all : (elt -> bool) -> t -> bool
26 val exists : (elt -> bool) -> t -> bool
27 val filter : (elt -> bool) -> t -> t
28 val partition : (elt -> bool) -> t -> t * t
29 val cardinal : t -> int
30 val elements : t -> elt list
31 val from_list : elt list -> t
34 val equal : t -> t -> bool
37 module Make : functor (E : Sigs.Set) -> S with type elt = E.elt