# receiveOutput A closure that executes when the publisher receives a value from the upstream publisher. ``` var receiveOutput: ((Publishers.HandleEvents.Output) -> Void)? ``` --- 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)