---
title: block
framework: coreml
role: symbol
role_heading: Instance Property
path: coreml/mlmodelstructure-swift.enum/program/function/block
---

# block

The active block in the function.

## Declaration

```swift
let block: MLModelStructure.Program.Block
```

## See Also

### Accessing the properties

- [inputs](coreml/mlmodelstructure-swift.enum/program/function/inputs.md)