# selecting(columnNames:) Generates a data frame slice that includes the columns you select with a sequence of names. ``` func selecting(columnNames: S) -> DataFrame.Slice where S : Sequence, S.Element == String ``` ## Parameters `columnNames` A sequence of column names. ## Return Value A new data frame slice. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)