Ruby Kernel#require Method

The Ruby Kernel#require method¹:

• If require is called more than once with the same arguments it would not be reloaded if its already loaded.
• Ruby keeps track of which files were already required.
• Usually you don’t need the extension when requireing a feature.

The Kernel#require_relative method² is very similar to require:

• Behaving the same just in the same directory as the file that the code is executing from.
• Don’t need to manipulate the load path to get to the current folder