# append(_:as:) Appends the given value’s bytes to this span’s bytes. ``` mutating func append(_ value: T, as type: T.Type) where T : BitwiseCopyable ``` ## Parameters `value` The value to store as raw bytes. `type` The type of the value. --- 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)