the raw values (should not contain duplicate)
(distinctResult: StringAdd).self
(distinctResult: StringFormat).self
(distinctResult: ArrowAssoc[DistinctResult]).x
(Since version 2.10.0) Use leftOfArrow instead
(distinctResult: Ensuring[DistinctResult]).x
(Since version 2.10.0) Use resultOfEnsuring instead
the raw values (should not contain duplicate)