---
title: compilationCompletionHandler
framework: metalperformanceshadersgraph
role: symbol
role_heading: Instance Property
path: metalperformanceshadersgraph/mpsgraphcompilationdescriptor/compilationcompletionhandler
---

# compilationCompletionHandler

The handler that the graph calls when the compilation completes.

## Declaration

```swift
var compilationCompletionHandler: MPSGraphCompilationCompletionHandler { get set }
```

## Discussion

Discussion Default value is nil.