<!--
{
  "availability" : [
    "iOS: 13.0.0 -",
    "iPadOS: 13.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 10.15.0 -",
    "tvOS: 13.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Swift",
  "identifier" : "/documentation/Swift/UnsafeContinuation/resume()",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "Swift"
    ],
    "preciseIdentifier" : "s:Scc6resumeyyytRszrlF"
  },
  "title" : "resume()"
}
-->

# resume()

Resume the task that’s awaiting the continuation by returning.

```
func resume() where T == ()
```

## Discussion

A continuation must be resumed exactly once.
If the continuation has already resumed,
then calling this method results in undefined behavior.

After calling this method,
control immediately returns to the caller.
The task continues executing
when its executor schedules it.

---

Copyright &copy; 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)