Category: 2. Features

Ruby has a feature of single inheritance only. Ruby has classes as well as modules. A module has methods but no instances. Instead, a module can be mixed into a class, which adds the method of that module to the class. It is similar to inheritance but much more flexible.

Ruby is a flexible language as you can easily remove, redefine or add existing parts to it. It allows its users to freely alter its parts as they wish.

Ruby is purely object oriented programming language. Each and every value is an object. Every object has a class and every class has a super class. Every code has their properties and actions. Ruby is influenced with Smalltalk language. Rules applying to objects applies to the entire Ruby.