---
title: isConcurrent
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/operation/isconcurrent
---

# isConcurrent

A Boolean value indicating whether the operation executes its task asynchronously.

## Declaration

```swift
var isConcurrent: Bool { get }
```

## Discussion

Discussion Use the isAsynchronous property instead. The value of this property is true for operations that run asynchronously with respect to the current thread or false for operations that run synchronously on the current thread. The default value of this property is false. In macOS 10.6 and later, operation queues ignore the value in this property and always start operations on a separate thread.

## See Also

### Getting the Operation Status

- [isCancelled](foundation/operation/iscancelled.md)
- [isExecuting](foundation/operation/isexecuting.md)
- [isFinished](foundation/operation/isfinished.md)
- [isAsynchronous](foundation/operation/isasynchronous.md)
- [isReady](foundation/operation/isready.md)
- [name](foundation/operation/name.md)