---
title: Predefined Callback Structures
framework: corefoundation
role: collectionGroup
role_heading: API Collection
path: corefoundation/cfset-predefined-callback-structures
---

# Predefined Callback Structures

CFSet provides some predefined callbacks for your convenience.

## Topics

### Constants

- [kCFTypeSetCallBacks](corefoundation/kcftypesetcallbacks.md)
- [kCFCopyStringSetCallBacks](corefoundation/kcfcopystringsetcallbacks.md)