# storeBytes(of:toByteOffset:as:) Stores the given value’s bytes to the specified offset into the span’s memory. ``` mutating func storeBytes(of value: T, toByteOffset offset: Int, as type: T.Type) where T : BitwiseCopyable, T : ConvertibleToBytes ``` ## Parameters `value` The value to store as raw bytes. `offset` The offset in bytes into the span’s memory at which to begin writing the bytes from the value. `type` The type of the instance to store. ## Discussion The range of bytes required to store a value of type `T` starting at byte offset `offset` must be completely within the span. --- 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)