usage of isMemberOfClass; returning false

Question

In the code below I thought the second condition would be true, but it is turning out as false. Am I missing something? Please help me understand.

NSArray *a         


        

Answer 1

This is the correct behavior. Try inspecting the actual class for that object:

NSArray *array = [[NSArray alloc] init];
NSLog(@"%@", NSStringFromClass([array class]));

The output you get is something like:

2013-02-15 23:42:31.272 Project[91998:c07] __NSArrayI

So the actual class is __NSArrayI (a private subclass of NSArray), not NSArray itself. Typically, isKindOfClass: provides more useful results.