# filter(matching:equalTo:) Filters items by a given optional property that matches a specific value. ``` mutating func filter(matching keyPath: KeyPath, equalTo value: Value?) where Value : MusicLibraryRequestFilterValueEquatable ``` --- 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)