---
title: UITraitMutations
framework: uikit
role: symbol
role_heading: Type Alias
platforms: [iOS 17.0+, iPadOS 17.0+, Mac Catalyst 17.0+, tvOS 17.0+, visionOS 1.0+]
path: uikit/uitraitmutations
---

# UITraitMutations

## Declaration

```occ
typedef void (^)(id<UIMutableTraits>) UITraitMutations;
```

## See Also

### Modifying traits

- [traitCollectionWithTraits:](uikit/uitraitcollection/traitcollectionwithtraits:.md)
- [traitCollectionByModifyingTraits:](uikit/uitraitcollection/traitcollectionbymodifyingtraits:.md)