---
title: "init(version:retain:release:copyDescription:equal:hash:)"
framework: corefoundation
role: symbol
role_heading: Initializer
path: "corefoundation/cfbagcallbacks/init(version:retain:release:copydescription:equal:hash:)"
---

# init(version:retain:release:copyDescription:equal:hash:)

## Declaration

```swift
init(version: CFIndex, retain: CFBagRetainCallBack!, release: CFBagReleaseCallBack!, copyDescription: CFBagCopyDescriptionCallBack!, equal: CFBagEqualCallBack!, hash: CFBagHashCallBack!)
```