# columnStarts The starting index for each column in the row indices array. ``` var columnStarts: UnsafeMutablePointer ``` ## Discussion This array requires an additional, final entry that defines the final column’s length. --- 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)