Swift Object ModelLesson 27Free preview

Swift Inheritance

This lesson is part of Swift · All levels

Summary

This lesson discusses inheritance in the Swift class. Subclasses inherit all the characteristics (properties and methods) of superclasses. Subclasses can override parent methods using the keyword 'override', call parent implementations with 'super', and prevent further subclassing using the keyword 'final'.

Key points

The inheritance is expressed by the syntax ': Superclass' after the name Subclass
The keyword 'override' must be written when hitting a method or property belonging to a superclass
The keyword 'super' is used to access the original method or property belonging to the parent class
The keyword 'final' prevents a class or method from being overridden by another class

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