# map(_:) Returns a `LazyMapSequence` over this `Sequence`. The elements of the result are computed lazily, each time they are read, by calling `transform` function on a base element. ``` func map(_ transform: @escaping (Self.Element) -> U) -> LazyMapSequence ``` --- 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)