---
title: AttributedStringAttributeMutation Implementations
framework: foundation
role: collectionGroup
role_heading: API Collection
path: foundation/attributedsubstring/attributedstringattributemutation-implementations
---

# AttributedStringAttributeMutation Implementations

## Topics

### Instance Methods

- [mergeAttributes(_:mergePolicy:)](foundation/attributedsubstring/mergeattributes(_:mergepolicy:).md)
- [replaceAttributes(_:with:)](foundation/attributedsubstring/replaceattributes(_:with:).md)
- [setAttributes(_:)](foundation/attributedsubstring/setattributes(_:).md)