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# UICollectionView.SelfSizingInvalidation.enabledIncludingConstraints

A mode that enables automatic self-sizing invalidation after Auto Layout changes.

```
case enabledIncludingConstraints
```

## Discussion

If you use this self-sizing invalidation mode, calling [`invalidateIntrinsicContentSize()`](/documentation/UIKit/UIView/invalidateIntrinsicContentSize()) on a self-sizing cell or its [`contentView`](/documentation/UIKit/UICollectionViewCell/contentView) causes the cell to resize if necessary. Additionally, any Auto Layout change within the [`contentView`](/documentation/UIKit/UICollectionViewCell/contentView) of a self-sizing cell automatically calls [`invalidateIntrinsicContentSize()`](/documentation/UIKit/UIView/invalidateIntrinsicContentSize()).

---

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