Removes all associations for a given object.
- iOS 3.1+
- macOS 10.6+
- tvOS 9.0+
- watchOS 1.0+
An object that maintains associated objects.
The main purpose of this function is to make it easy to return an object to a "pristine state”. You should not use this function for general removal of associations from objects, since it also removes associations that other clients may have added to the object. Typically you should use
objc_set with a
nil value to clear an association.