# init(_:) Creates an `AnyRandomAccessCollection` having the same underlying collection as `other`. ``` init?(_ other: AnyCollection) ``` ## Discussion If the underlying collection stored by `other` does not satisfy `RandomAccessCollection`, the result is `nil`. > Complexity: O(1) --- 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)