Basic concepts
Object approach

First of all, we're going to look at the concepts found in all object-oriented languages. The aim is not to define binary criteria that would enable us to decide between what is and what is not an object language. In my opinion, this quarrel is sterile and uninteresting. It's sterile because the best language is no match for a stubborn programmer determined to do bad programming at any cost. As a result, using an object-oriented language isn't enough to guarantee that you're programming with objects. This is of little interest, as the very name of object-oriented language has become a vital label, and there are currently few new languages that are not.