# .&(_:_:) A vector mask that is the pointwise logical conjunction of the inputs. ``` static func .& (a: SIMDMask, b: SIMDMask) -> SIMDMask ``` ## Discussion Equivalent to: ``` var result = SIMDMask>() for i in result.indices { result[i] = a[i] && b[i] } ``` Note that unlike the scalar `&&` operator, the SIMD `.&` operator always fully evaluates both arguments. --- 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)