---
title: DispatchQoS.QoSClass.unspecified
framework: dispatch
role: symbol
role_heading: Case
path: dispatch/dispatchqos/qosclass-swift.enum/unspecified
---

# DispatchQoS.QoSClass.unspecified

The absence of a quality-of-service class.

## Declaration

```swift
case unspecified
```

## See Also

### Getting the Quality-of-Service Class

- [DispatchQoS.QoSClass.userInteractive](dispatch/dispatchqos/qosclass-swift.enum/userinteractive.md)
- [DispatchQoS.QoSClass.userInitiated](dispatch/dispatchqos/qosclass-swift.enum/userinitiated.md)
- [DispatchQoS.QoSClass.default](dispatch/dispatchqos/qosclass-swift.enum/default.md)
- [DispatchQoS.QoSClass.utility](dispatch/dispatchqos/qosclass-swift.enum/utility.md)
- [DispatchQoS.QoSClass.background](dispatch/dispatchqos/qosclass-swift.enum/background.md)