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iOS Objective-C Basics (Retired) Introduction to Objective-C Inheritance

Genevieve Tan
Genevieve Tan
4,257 Points

What is wrong with my code ?

Finally, we have a class named 'Bling' which needs to have a property called 'ruby'. Switch over to 'Bling.h' and add a property named 'ruby' that belongs to the class 'Ruby'.

This is the Question

Gem.h
@interface Gem : NSObject
@end
Ruby.h
@interface Ruby : Gem
@property(nonatomic) int ruby;
@end
Bling.h
@interface Bling : Ruby

@end

2 Answers

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Genevieve Tan !

In Challenge Task 3 of 3 you were asked to add the property named 'ruby' to 'Bling.h' but you added it by mistake to 'Ruby.h'. Also the class of the property named 'ruby' belongs to the class 'Ruby' - it's not an integer.

So Bling.h would be:

@interface Bling : Ruby
@property(nonatomic, strong) Ruby *ruby;
@end
Genevieve Tan
Genevieve Tan
4,257 Points

Holger Liesegang I assumed the variables created in the main class will be able to be used by the sub class. I forgot about that i had to create it under Bling.h Thanks for your help! :)