Hey, a warm welcome to day 43.
Today you're going to learn some advanced concepts about classes and object oriented programming.
Plus, I'll make sure that you understand all the terms you have learned so far, such as attributes,
methods, instance variables.
So we have covered this, but I'm sure that there is still some sort of uncertainty on your parts.
You still don't know what is the instance variable, what is a method, and so on.
Specifically, what you learn today is instance variables versus class variables.
You'll know the difference in SAS methods versus class methods.
You will learn to use properties, class properties.
You learn static methods, magic methods, abstract classes, and abstract methods.
And that's all you need to know about classes.
So don't miss the videos of today and I'll talk to you in the next one.