Now we should have a basic grasp on object-oriented programming. As discussed in this section, we should have an understanding of the concept of "objects" that can contain data and/or code, such as attributes and methods.

In this section we explained the concept of local variables and instance variables, as well as instance methods. We learned about setter and getter methods, as well as how to abstract away some of the repetitive code using attribute accessor macros. We can now set instance variables from our #initialize method.

What we will be able to achieve is shared functionality throughout the application as needed. You're well on our way to having enough knowledge of OOP to develop your own fully functional applications!