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# common

A pseudo-mode that includes one or more other run loop modes.

```
static let common: RunLoop.Mode
```

## Discussion

When you add an object to a run loop using this mode, the runloop monitors the object when running in any of the common modes. For details about adding a runloop mode to the set of common modes, see <doc://com.apple.documentation/documentation/CoreFoundation/CFRunLoopAddCommonMode(_:_:)>.

---

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