---
title: NSOwnedObjectIdentityHashCallBacks
framework: foundation
role: symbol
role_heading: Global Variable
path: foundation/nsownedobjectidentityhashcallbacks
---

# NSOwnedObjectIdentityHashCallBacks

For sets of objects, with transfer of ownership upon insertion, using pointer equality.

## Declaration

```swift
let NSOwnedObjectIdentityHashCallBacks: NSHashTableCallBacks
```

## See Also

### Constants

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