sig type elt = T.t type t = Set.Make(T).t val empty : t val is_empty : t -> bool val mem : elt -> t -> bool val add : elt -> t -> t val singleton : elt -> t val remove : elt -> t -> t val union : t -> t -> t val inter : t -> t -> t val disjoint : t -> t -> bool val diff : t -> t -> t val compare : t -> t -> int val equal : t -> t -> bool val subset : t -> t -> bool val iter : (elt -> unit) -> t -> unit val fold : (elt -> 'a -> 'a) -> t -> 'a -> 'a val for_all : (elt -> bool) -> t -> bool val exists : (elt -> bool) -> t -> bool val filter : (elt -> bool) -> t -> t val filter_map : (elt -> elt option) -> t -> t val partition : (elt -> bool) -> t -> t * t val cardinal : t -> int val elements : t -> elt list val min_elt : t -> elt val min_elt_opt : t -> elt option val max_elt : t -> elt val max_elt_opt : t -> elt option val choose : t -> elt val choose_opt : t -> elt option val split : elt -> t -> t * bool * t val find : elt -> t -> elt val find_opt : elt -> t -> elt option val find_first : (elt -> bool) -> t -> elt val find_first_opt : (elt -> bool) -> t -> elt option val find_last : (elt -> bool) -> t -> elt val find_last_opt : (elt -> bool) -> t -> elt option val to_seq_from : elt -> t -> elt Seq.t val to_seq : t -> elt Seq.t val to_rev_seq : t -> elt Seq.t val add_seq : elt Seq.t -> t -> t val of_seq : elt Seq.t -> t val output : out_channel -> t -> unit val print : Format.formatter -> t -> unit val to_string : t -> string val of_list : elt list -> t val map : (elt -> elt) -> t -> t end