# init(hash:isEqual:retain:release:describe:) ``` init(hash: ((NSHashTable, UnsafeRawPointer) -> Int)?, isEqual: ((NSHashTable, UnsafeRawPointer, UnsafeRawPointer) -> ObjCBool)?, retain: ((NSHashTable, UnsafeRawPointer) -> Void)?, release: ((NSHashTable, UnsafeMutableRawPointer) -> Void)?, describe: ((NSHashTable, UnsafeRawPointer) -> String?)?) ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)