Why does NSDictionary report an unusual class name?

Question

NSDictionary *dict = [NSDictionary dictionary];
NSLog(@\"%@\", NSStringFromClass([dict class])); 

This code prints \"__NSDictionary0\".

For my

Answer 1

If you want to test for mutability, your best bet would probably be conformsToProtocol: @protocol(NSMutableCopying)