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Constant are not so often used in Ruby, however, it's always good to know how they work when the need arises. Constants are simply variables that are not meant to be changed.

Yes, I already now about the rails new command. But what if you want better defaults, like an existing controller, an existing view, or another way to to launch the Procfile?

Let's see the official way to create Rails application, as well as the minimalistic option.

Before we start using Enumerators, we need to understand the concept of Enumeration and the tools Ruby gives us for Enumeration. Also, we will be assuming that you are comfortable with blocks in Ruby.

Strftime means String format time. Let's see how with examples.