# append(contentsOf:) Appends the characters in the given sequence to the string. ``` mutating func append(contentsOf newElements: S) where S : Sequence, S.Element == Character ``` ## Parameters `newElements` A sequence of characters. --- 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)