Question

Say that I have a base class with a class method:

@interface base : NSObject

+(id)method;

@end

And I have 10 derived classes:from derived1 to derived10, each of them overwrite the method:

@interface derived1 : base 
@end

now that’s the problem, I have an array like this:

NSArray *array = [NSArray arrayWithObjects:[derived1 class],[derived2
class]…….[derived10 class]];

now I want to iterate through this array and call each element’s method,how to?

PS: I need to perform the method one by one in an foreach loop.

Answer 1

1. Iterate like you would normally
2. Get the object’s class

3. Call the method on that

   for (id object in objects) {
       [[object class] method];
   }
   

Edit

The above is if you have concrete instances (@Alladinian 🙂 cheers) otherwise if your example code is literal and you are in fact putting the classes in the array you just use

for (id object in objects) {
   [object method];
}