对类参数执行类方法

Question

How can I perform a class method on a class passed to a method?

Let's say I have a class:

@interface MyClass:NSOBject
+ (NSArray *) array;
@end

When I instantiate the class

MyClass test = [[MyClass alloc] init;

I can access the array by

[[test class] array];

but if I pass this class to a method

[doStuffWithMyClass: (Class) aClass];

how can I access the arry within the method? can I "cast" class to a certain class?

- (NSInteger) doStuffWithMyClass: (Class) aClass {
   return [aClass array].count;
}

Answer 1

Class es are objects, so yes, you can cast them.

Otherwise you can just do

[aClass performSelector:@selector(array)];