# withCheckedContinuation(isolation:function:_:) Source-compatibility overload; replaced by [`withCheckedContinuation(function:_:)`](/documentation/Swift/withCheckedContinuation(function:_:)). ``` @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0) func withCheckedContinuation(isolation: isolated (any Actor)?, function: String = #function, _ body: (CheckedContinuation) -> Void) async -> sending T ``` --- 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)