---
title: prefetch
framework: combine
role: symbol
role_heading: Instance Property
path: combine/publishers/buffer/prefetch
---

# prefetch

The strategy for initially populating the buffer.

## Declaration

```swift
let prefetch: Publishers.PrefetchStrategy
```

## See Also

### Inspecting publisher properties

- [upstream](combine/publishers/buffer/upstream.md)
- [size](combine/publishers/buffer/size.md)
- [whenFull](combine/publishers/buffer/whenfull.md)