# KeyPathComparator A comparator that uses another sort comparator to provide the comparison of values at a key path. ``` struct KeyPathComparator ``` ## Topics ### Using Key Path Comparators [`compare(_:_:)`](/documentation/Foundation/KeyPathComparator/compare(_:_:)) Provides the relative ordering of two items according to the ordering of the properties that the comparator’s key path references. ### Inspecting Key Path Comparators [`keyPath`](/documentation/Foundation/KeyPathComparator/keyPath) The key path that the comparator uses to compare properties. [`order`](/documentation/Foundation/KeyPathComparator/order) The sort order that the comparator uses to compare properties. ### Initializers [`init(_:comparator:)`](/documentation/Foundation/KeyPathComparator/init(_:comparator:)-8b13q) [`init(_:comparator:)`](/documentation/Foundation/KeyPathComparator/init(_:comparator:)-284rt) [`init(_:comparator:order:)`](/documentation/Foundation/KeyPathComparator/init(_:comparator:order:)-749jk) [`init(_:comparator:order:)`](/documentation/Foundation/KeyPathComparator/init(_:comparator:order:)-3gjxd) [`init(_:order:)`](/documentation/Foundation/KeyPathComparator/init(_:order:)-6r8gw) [`init(_:order:)`](/documentation/Foundation/KeyPathComparator/init(_:order:)-4hyoi) --- 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)