# Publishers.HandleEvents A publisher that performs the specified closures when publisher events occur. ``` struct HandleEvents where Upstream : Publisher ``` ## Topics ### Creating an event-handling publisher [`init(upstream:receiveSubscription:receiveOutput:receiveCompletion:receiveCancel:receiveRequest:)`](/documentation/Combine/Publishers/HandleEvents/init(upstream:receiveSubscription:receiveOutput:receiveCompletion:receiveCancel:receiveRequest:)) Creates a publisher that performs the specified closures when publisher events occur. ### Declaring supporting types [`Publishers.HandleEvents.Output`](/documentation/Combine/Publishers/HandleEvents/Output) The kind of values published by this publisher. [`Publishers.HandleEvents.Failure`](/documentation/Combine/Publishers/HandleEvents/Failure) The kind of errors this publisher might publish. ### Inspecting publisher properties [`upstream`](/documentation/Combine/Publishers/HandleEvents/upstream) The publisher from which this publisher receives elements. [`receiveSubscription`](/documentation/Combine/Publishers/HandleEvents/receiveSubscription) A closure that executes when the publisher receives the subscription from the upstream publisher. [`receiveOutput`](/documentation/Combine/Publishers/HandleEvents/receiveOutput) A closure that executes when the publisher receives a value from the upstream publisher. [`receiveCompletion`](/documentation/Combine/Publishers/HandleEvents/receiveCompletion) A closure that executes when the upstream publisher finishes normally or terminates with an error. [`receiveCancel`](/documentation/Combine/Publishers/HandleEvents/receiveCancel) A closure that executes when the downstream receiver cancels publishing. [`receiveRequest`](/documentation/Combine/Publishers/HandleEvents/receiveRequest) A closure that executes when the publisher receives a request for more elements. --- 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)