Inheritance

Overriding

Overriding Property Getters and Setters

We can present an inherited read-only property as a read-write one by overwriting getter and setter method.

But, we cannot present an inherited read-write one as a read-only one.

Preventing Overrides

We can use the final keyword to prefix a class name to make it disabled to be inherited, and same as property and method to make it disabled to be overrided, such as final var, final func, final class func, and final subscript

This chapter is familiar enough to me, so there is nothing more to be discoursed.

But in this chapter, I learn an enlighsh expression of regardless of .

For example:

regardless of whether it was originally defined as a stored or computed property

regardless of how that property was originally implemented

It means we can disregard this circumstance we meet, no matter what it is.

Let’s think!