---
title: NSObjectHashCallBacks
framework: foundation
role: symbol
role_heading: Global Variable
path: foundation/nsobjecthashcallbacks
---

# NSObjectHashCallBacks

For sets of objects (similar to NSSet).

## Declaration

```swift
let NSObjectHashCallBacks: NSHashTableCallBacks
```

## See Also

### Constants

- [NSIntegerHashCallBacks](foundation/nsintegerhashcallbacks.md)
- [NSNonOwnedPointerHashCallBacks](foundation/nsnonownedpointerhashcallbacks.md)
- [NSNonRetainedObjectHashCallBacks](foundation/nsnonretainedobjecthashcallbacks.md)
- [NSOwnedObjectIdentityHashCallBacks](foundation/nsownedobjectidentityhashcallbacks.md)
- [NSOwnedPointerHashCallBacks](foundation/nsownedpointerhashcallbacks.md)
- [NSPointerToStructHashCallBacks](foundation/nspointertostructhashcallbacks.md)