---
title: qosClass
framework: dispatch
role: symbol
role_heading: Instance Property
path: dispatch/dispatchqos/qosclass-swift.property
---

# qosClass

The quality-of-service class.

## Declaration

```swift
let qosClass: DispatchQoS.QoSClass
```

## See Also

### Getting the QoS Attributes

- [relativePriority](dispatch/dispatchqos/relativepriority.md)