---
title: "init(device:lossDescriptor:)"
framework: metalperformanceshaders
role: symbol
role_heading: Initializer
path: "metalperformanceshaders/mpsnnforwardloss/init(device:lossdescriptor:)"
---

# init(device:lossDescriptor:)

## Declaration

```swift
init(device: any MTLDevice, lossDescriptor: MPSCNNLossDescriptor)
```