---
title: common
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/runloop/mode/common
---

# common

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

## Declaration

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

## Discussion

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 CFRunLoopAddCommonMode(_:_:).

## See Also

### System Run Loop Modes

- [default](foundation/runloop/mode/default.md)
- [eventTracking](foundation/runloop/mode/eventtracking.md)
- [modalPanel](foundation/runloop/mode/modalpanel.md)
- [tracking](foundation/runloop/mode/tracking.md)