# PredicateExpressions.Negation ``` struct Negation where Wrapped : PredicateExpression, Wrapped.Output == Bool ``` ## Topics ### Initializers [`init(Wrapped)`](/documentation/Foundation/PredicateExpressions/Negation/init(_:)) ### Instance Properties [`let wrapped: Wrapped`](/documentation/Foundation/PredicateExpressions/Negation/wrapped) ## Relationships ### Conforms To [`Encodable`](/documentation/Swift/Encodable) [`Copyable`](/documentation/Swift/Copyable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Escapable`](/documentation/Swift/Escapable) [`Decodable`](/documentation/Swift/Decodable) [`PredicateExpression`](/documentation/Foundation/PredicateExpression) [`Sendable`](/documentation/Swift/Sendable) [`StandardPredicateExpression`](/documentation/Foundation/StandardPredicateExpression) [`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible) --- 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)