Chapter Overview

That was a challenging chapter! We’ve used everything we covered in the previous chapters to build a larger application, and we faced some new concepts. Let’s review them:

• We covered how to start a project with Mix and its basic commands.
• We saw how to structure the project in folders and namespaces.
• We created customized structs to describe our domain.
• We used Elixir protocols to achieve polymorphism.
• We used Elixir behaviors to create a contract between modules.