---
title: target_desc
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/bnnsmhaprojectionparameters/target_desc
---

# target_desc

The descriptor—which is either an input query, key, or value, or an output—of the main target of the operation.

## Declaration

```swift
var target_desc: BNNSNDArrayDescriptor
```

## See Also

### Instance Properties

- [weights](accelerate/bnnsmhaprojectionparameters/weights.md)
- [bias](accelerate/bnnsmhaprojectionparameters/bias.md)