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# isConcurrent

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

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

## Discussion

Use the [`isAsynchronous`](/documentation/Foundation/Operation/isAsynchronous) property instead.

The value of this property is <doc://com.apple.documentation/documentation/Swift/true> for operations that run asynchronously with respect to the current thread or <doc://com.apple.documentation/documentation/Swift/false> for operations that run synchronously on the current thread. The default value of this property is <doc://com.apple.documentation/documentation/Swift/false>.

In macOS 10.6 and later, operation queues ignore the value in this property and always start operations on a separate thread.

---

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