Can an ObjC class object conform to a protocol?

Question

Is there a way to indicate to the compiler that a class object conforms to a protocol?

As I understand, by creating +(void)foo class methods, an instanc

Answer 1

There is no Objective-C syntax to indicate that a metaclass conforms to a protocol.

I think you can do it at runtime, by using class_addProtocol on the metaclass. But I haven't tried it.

I guess you could also write a +conformsToProtocol: method on your class, and lie about your conformance. This could have unexpected side-effects, since there's already a +conformsToProtocol: on NSObject (in addition to -conformsToProtocol:).

Neither of these will eliminate the need for a cast to shut the compiler up. Just use a singleton.