# trimPrefix(_:) Removes `prefix` from the start of the collection. ``` mutating func trimPrefix(_ prefix: Prefix) where Prefix : Sequence, Self.Element == Prefix.Element ``` ## Parameters `prefix` The collection to remove from this collection. --- 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)