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iOS Object-Oriented Swift Inheritance Convenience Initializers

Matt Li
Matt Li
2,753 Points
Posted by Matt Li
Matt Li
2,753 Points

This is in reference to quiz question #1. Why doesn't RoundButton call the designated init of the super class?

The correct answer to pass the question is that the convenience init is missing the keyword "convenience". However, I don't understand why the designated init of RoundButton does not need to call the designated init of its super class - Button. How else would width and height get initialized? Thanks!