# init(continuation:function:) Creates a checked continuation from an unsafe continuation. ``` init(continuation: UnsafeContinuation, function: String = #function) ``` ## Parameters `continuation` An instance of `UnsafeContinuation` that hasn’t yet been resumed. After passing the unsafe continuation to this initializer, don’t use it outside of this object. `function` A string identifying the declaration that is the notional source for the continuation, used to identify the continuation in runtime diagnostics related to misuse of this continuation. ## Discussion Instead of calling this initializer, most code calls the `withCheckedContinuation(function:_:)` or `withCheckedThrowingContinuation(function:_:)` function instead. You only need to initialize your own `CheckedContinuation` if you already have an `UnsafeContinuation` you want to impose checking on. --- 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)