Named (docs.findlib-1.base.Base.Set.Using

val is_subset : 
  comparator:('a, 'cmp) Comparator.t ->
  ('a, 'cmp) t Base__.Set_intf.Named.t ->
  of_:('a, 'cmp) t Base__.Set_intf.Named.t ->
  unit Or_error.t

val equal : 
  comparator:('a, 'cmp) Comparator.t ->
  ('a, 'cmp) t Base__.Set_intf.Named.t ->
  ('a, 'cmp) t Base__.Set_intf.Named.t ->
  unit Or_error.t