---
title: concurrent
framework: dispatch
role: symbol
role_heading: Type Property
path: dispatch/dispatchqueue/attributes/concurrent
---

# concurrent

The queue schedules tasks concurrently.

## Declaration

```swift
static let concurrent: DispatchQueue.Attributes
```

## Discussion

Discussion If this attribute is not present, the queue schedules tasks serially in first-in, first-out (FIFO) order.

## See Also

### Attributes

- [initiallyInactive](dispatch/dispatchqueue/attributes/initiallyinactive.md)