# count() Publishes the number of elements received from the upstream publisher. ``` func count() -> Publishers.Count ``` ## Return Value A publisher that consumes all elements until the upstream publisher finishes, then emits a single value with the total number of elements received. ## Discussion Use [`count()`](/documentation/Combine/Publisher/count()) to determine the number of elements received from the upstream publisher before it completes: ``` let numbers = (0...10) cancellable = numbers.publisher .count() .sink { print("\($0)") } // Prints: "11" ``` --- 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)