# unload() Unloads the code associated with the receiver. ``` func unload() -> Bool ``` ## Return Value if the bundle was successfully unloaded or was not already loaded; otherwise, if the bundle could not be unloaded. ## Discussion This method attempts to unload a bundle’s executable code using the underlying dynamic loader (typically `dyld`). You may use this method to unload plug-in and framework bundles when you no longer need the code they contain. You should use this method to unload bundles that were loaded using the methods of the `NSBundle` class only. Do not use this method to unload bundles that were originally loaded using the bundle-manipulation functions in Core Foundation. It is the responsibility of the caller to ensure that no in-memory objects or data structures refer to the code being unloaded. For example, if you have an object whose class is defined in a bundle, you must release that object prior to unloading the bundle. Similarly, your code should not attempt to access any symbols defined in an unloaded bundle. ### Special Considerations Prior to OS X version 10.5, code could not be unloaded once loaded, and this method would always return . In macOS 10.5 and later, you can unload a bundle’s executable code using this method. --- 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)