# init(upstream:output:) Creates a publisher that replaces an empty stream with a provided element. ``` init(upstream: Upstream, output: Publishers.ReplaceEmpty.Output) ``` ## Parameters `upstream` The element to deliver when the upstream publisher finishes without delivering any elements. `output` The publisher from which this publisher receives 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)