functor (Ord : OrderedType) -> sig type elt = Ord.t type t = Set.Make(Ord).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 : f:(elt -> unit) -> t -> unit val map : f:(elt -> elt) -> t -> t val fold : f:(elt -> 'a -> 'a) -> t -> init:'a -> 'a val for_all : f:(elt -> bool) -> t -> bool val exists : f:(elt -> bool) -> t -> bool val filter : f:(elt -> bool) -> t -> t val filter_map : f:(elt -> elt option) -> t -> t val partition : f:(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 : f:(elt -> bool) -> t -> elt val find_first_opt : f:(elt -> bool) -> t -> elt option val find_last : f:(elt -> bool) -> t -> elt val find_last_opt : f:(elt -> bool) -> t -> elt option val of_list : elt list -> t 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 end