# withValue(_:operation:isolation:file:line:) ``` @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0) @discardableResult final func withValue(_ valueDuringOperation: Value, operation: () async throws -> R, isolation: isolated (any Actor)? = #isolation, file: String = #fileID, line: UInt = #line) async rethrows -> R ``` --- 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)