A quick-and-dirty implementation of an Objective-C analogue to the Python super class.
Though Objective-C, lacking multiple inheritance, has less need than Python for something like this, it serves two purposes:
- Making
[super respondsToSelector:]behave as naïvely expected.
Beginning Objective-C programmers often try to use [super respondsToSelector:] to test if they should send a message to super. This doesn't do what they expect; since -respondsToSelector: is rarely overridden, [super respondsToSelector:] is exactly equivalent to [self respondsToSelector:], and this method winds up returning YES when the programmer thinks it should return NO.
It's kind of weird that [super foo] and [super respondsToSelector:@selector(foo)] are out of step like this. This class harmonizes them.
- Making it easy to invoke grandfather implementations.
The super keyword doesn't doesn't afford access to more than one level of ancestry. This class lets you invoke any superclass's implementation of a method. This is particularly useful when overriding a buggy superclass method implementation.