# DispatchSpecificKey A key associated with a specific contextual value on a dispatch queue. ``` final class DispatchSpecificKey ``` ## Overview Access the value of a key using the [`setSpecific(key:value:)`](/documentation/Dispatch/DispatchQueue/setSpecific(key:value:)) and [`getSpecific(key:)`](/documentation/Dispatch/DispatchQueue/getSpecific(key:)-swift.method) methods. ## Topics ### Creating a Key [`init()`](/documentation/Dispatch/DispatchSpecificKey/init()) --- 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)