---
title: "modifyingTraits(_:)"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/uitraitcollection/modifyingtraits(_:)"
---

# modifyingTraits(_:)

## Declaration

```swift
func modifyingTraits(_ mutations: UITraitCollection.TraitMutations) -> UITraitCollection
```

## See Also

### Modifying traits

- [init(mutations:)](uikit/uitraitcollection/init(mutations:).md)
- [UITraitCollection.TraitMutations](uikit/uitraitcollection/traitmutations.md)