# max() Publishes the maximum value received from the upstream publisher, after it finishes. ``` func max() -> Publishers.Comparison ``` ## Return Value A publisher that publishes the maximum value received from the upstream publisher, after the upstream publisher finishes. ## Discussion Use [`max()`](/documentation/Combine/Publisher/max()) to determine the maximum value in the stream of elements from an upstream publisher. In the example below, the [`max()`](/documentation/Combine/Publisher/max()) operator emits a value when the publisher finishes, that value is the maximum of the values received from upstream, which is `10`. ``` let numbers = [0, 10, 5] cancellable = numbers.publisher .max() .sink { print("\($0)") } // Prints: "10" ``` After this publisher receives a request for more than 0 items, it requests unlimited items from its upstream publisher. --- 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)