# replacing(with:where:) Returns a copy of this vector, with elements replaced by elements of `other` in the lanes where `mask` is `true`. ``` func replacing(with other: SIMDMask, where mask: SIMDMask) -> SIMDMask ``` ## Discussion Equivalent to: ``` var result = Self() for i in indices { result[i] = mask[i] ? other[i] : self[i] } ``` --- 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)