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

So, basically, you need to know if you are having an NSMutableDictionary or a bare NSDictionary beforehand. Or don't need to know. Or create an NSMutableDictionary from your object (NSDictionary or NSMutableDictionary)?

What was the question originally for?