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# delegate

The view’s delegate.

```
weak var delegate: (any MTKViewDelegate)? { get set }
```

## Discussion

A delegate is optional. If you provide one, the view calls the delegate when it needs to update its contents. You should either provide a delegate or subclass the view to override the <doc://com.apple.documentation/documentation/UIKit/UIView/draw(_:)> method, but not both.

---

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