---
title: prefetchDataSource
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nscollectionview/prefetchdatasource
---

# prefetchDataSource

## Declaration

```swift
weak var prefetchDataSource: (any NSCollectionViewPrefetching)? { get set }
```

## See Also

### Prefetching Collection View Cells and Data

- [NSCollectionViewPrefetching](appkit/nscollectionviewprefetching.md)