# Module type Core_set_intf.Creators2

    module type Creators2 = sig .. end

    type ('a, 'cmp) set

    type ('a, 'cmp) t

    type ('a, 'cmp) tree

    val empty : ('a, 'cmp) t

    val singleton : 'a -> ('a, 'cmp) t

    val union_list : ('a, 'cmp) t list ->
           ('a, 'cmp) t

    val of_list : 'a list -> ('a, 'cmp) t

    val of_array : 'a array -> ('a, 'cmp) t

    val of_sorted_array : 'a array -> ('a, 'cmp) t Or_error.t

    val of_sorted_array_unchecked : 'a array -> ('a, 'cmp) t

    val stable_dedup_list : 'a list -> 'a list

    val map : ('a, 'c) set ->
           f:('a -> 'b) -> ('b, 'cmp) t

    val filter_map : ('a, 'c) set ->
           f:('a -> 'b option) -> ('b, 'cmp) t

    val of_tree : ('a, 'cmp) tree ->
           ('a, 'cmp) t

    val of_map_keys : ('a, 'b, 'cmp) Map.t -> ('a, 'cmp) t