Comprehensive Ruby Programming

Variable scope and variable types

In this section, we are going to talk about the five different types of variables in Ruby, including how and when they should be used, along with how variable scope works in the Ruby programming language. For this lesson, I will be using the Sublime Text editor instead of repl.it so that you can see how Ruby works using files (which is the standard way to build scripts).

The five different Ruby variable types are as follows:

• Local variables
• Global variables
• Instance variables
• Constants
• Class variables

Let's take a look at each of these variable types in detail.