Specific Class type parameter in Objective-C

Question

I want to accept a Class object as a parameter to a constructor of one of my classes. It needs to do a lot of custom work with it, and I want to abstract that away from the use

Answer 1

If you want to init dealership with a vehicle (I mean an initialized instance) you should do:

- (id)initWithCar:(Vehicle *)carClass
{
    //An extra check (only for DEBUG mode)
    NSAssert([carClass isKindOfClass:[Vehicle class]]);
    ... //carClass is now a Vehicle instance
}