---
title: "buildPartialBlock(first:)"
framework: widgetkit
role: symbol
role_heading: Type Method
path: "widgetkit/previewtimelinebuilder/buildpartialblock(first:)"
---

# buildPartialBlock(first:)

## Declaration

```swift
static func buildPartialBlock(first: [any TimelineEntry]) -> [any TimelineEntry]
```

## See Also

### Previewing timelines

- [buildArray(_:)](widgetkit/previewtimelinebuilder/buildarray(_:).md)
- [buildExpression(_:)](widgetkit/previewtimelinebuilder/buildexpression(_:).md)
- [buildPartialBlock(accumulated:next:)](widgetkit/previewtimelinebuilder/buildpartialblock(accumulated:next:).md)