---
title: "expand(_:)"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/nsdiffabledatasourcesectionsnapshot-swift.struct/expand(_:)"
---

# expand(_:)

Expands the specified items in the section snapshot.

## Declaration

```swift
mutating func expand(_ items: [ItemIdentifierType])
```

## See Also

### Expanding and collapsing items

- [isExpanded(_:)](uikit/nsdiffabledatasourcesectionsnapshot-swift.struct/isexpanded(_:).md)
- [collapse(_:)](uikit/nsdiffabledatasourcesectionsnapshot-swift.struct/collapse(_:).md)