# init(mutating:) Mutate the elements of a typed span as bytes. ``` init(mutating elements: inout MutableSpan) where Element : ConvertibleFromBytes, Element : ConvertibleToBytes ``` ## Parameters `elements` A typed span to reinterpret as raw bytes. ## Discussion The stride of `Element` must equal its size, and the starting address of `elements` must be well-aligned for `Element`. --- 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)