---
title: "buildExpression(_:)"
framework: developertoolssupport
role: symbol
role_heading: Type Method
path: "developertoolssupport/previewcamerabuilder/buildexpression(_:)-5okdh"
---

# buildExpression(_:)

Builds a partial result from a single camera.

## Declaration

```swift
static func buildExpression(_ camera: PreviewCamera) -> [PreviewCamera]
```

## See Also

### Building a preview camera

- [buildArray(_:)](developertoolssupport/previewcamerabuilder/buildarray(_:).md)
- [buildExpression(_:)](developertoolssupport/previewcamerabuilder/buildexpression(_:)-5t9d2.md)
- [buildPartialBlock(accumulated:next:)](developertoolssupport/previewcamerabuilder/buildpartialblock(accumulated:next:).md)
- [buildPartialBlock(first:)](developertoolssupport/previewcamerabuilder/buildpartialblock(first:).md)