---
title: "init(continuation:function:)"
framework: swift
role: symbol
role_heading: Initializer
path: "swift/checkedcontinuation/init(continuation:function:)"
---

# init(continuation:function:)

Creates a checked continuation from an unsafe continuation.

## Declaration

```swift
init(continuation: UnsafeContinuation<T, E>, 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

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<T, E> if you already have an UnsafeContinuation you want to impose checking on.