A hash set that uses polymorphic comparison
include Creators_generic with type a t := a t with type 'a elt = 'a with type (key, z) create_options := (key, z) create_options_without_first_class_moduleval create : ('a, unit ‑> 'a t) create_optionsval of_list : ('a, 'a elt list ‑> 'a t) create_optionsinclude Accessors with type a t := a t with type a elt := a eltinclude Container.Genericval length : _ t ‑> intval is_empty : _ t ‑> boolval fold_until : 'a t ‑> init:'accum ‑> f:('accum ‑> 'a elt ‑> ('accum, 'final) Base__.Container_intf.Continue_or_stop.t) ‑> finish:('accum ‑> 'final) ‑> 'finalval sum : (module Commutative_group.S with type t = 'sum) ‑> 'a t ‑> f:('a elt ‑> 'sum) ‑> 'sumval add : 'a t ‑> 'a ‑> unitval strict_add : 'a t ‑> 'a ‑> unit Or_error.tval strict_add_exn : 'a t ‑> 'a ‑> unitval remove : 'a t ‑> 'a ‑> unitval strict_remove : 'a t ‑> 'a ‑> unit Or_error.tval strict_remove_exn : 'a t ‑> 'a ‑> unitval clear : 'a t ‑> unitval filter_inplace : 'a t ‑> f:('a ‑> bool) ‑> unit