# objc_copyClassList(_:) Creates and returns a list of pointers to all registered class definitions. ``` func objc_copyClassList(_ outCount: UnsafeMutablePointer?) -> AutoreleasingUnsafeMutablePointer? ``` ## Parameters `outCount` An integer pointer used to store the number of classes returned by this function in the list. This parameter may be `nil`. ## Return Value A `nil` terminated array of classes. You must free the array with `free()`. ## Discussion --- 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)