In this chapter, we will look at the object-oriented nature of Dart. If you have prior knowledge of an OO language, most of this chapter will feel familiar. Although, coding classes is more succinct while introducing some nice new features such as factory constructors, and generalizing the use of interfaces. If you come from the JavaScript world, you will start to realize that classes can really structure your application.

Data mostly comes in collections. Dart has some neat classes to work with collections and they can be used for any type of collections. This is why they are called generic. As soon as you get a few code files in your project, structuring them by making libraries would become essential for code maintainability. Also, your code would probably use existing libraries written by other developers; to make it easy, Dart has its own package manager called pub. Automating the testing of code on a functional level will be done...