# append(moving:) Moves the elements of a buffer to the end of this array, leaving the buffer uninitialized. ``` mutating func append(moving items: UnsafeMutableBufferPointer) ``` ## Parameters `items` A fully initialized buffer whose contents to move into the array. ## Discussion If the array does not have sufficient capacity to hold all items in the buffer, then this reallocates the array’s storage to grow its capacity, using a geometric growth rate. > Complexity: O(`count` + `items.count`) --- 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)