---
title: UISplitViewController.PrimaryEdge.leading
framework: uikit
role: symbol
role_heading: Case
path: uikit/uisplitviewcontroller/primaryedge-swift.enum/leading
---

# UISplitViewController.PrimaryEdge.leading

Place the primary view controller on the leading edge of the interface.

## Declaration

```swift
case leading
```

## Discussion

Discussion In an interface that is oriented left-to-right, this value corresponds to the left side of the split view interface. For right-to-left interfaces, the leading edge is on the right side.

## See Also

### Constants

- [UISplitViewController.PrimaryEdge.trailing](uikit/uisplitviewcontroller/primaryedge-swift.enum/trailing.md)