We have come a long way in the world of design patterns in Scala. We saw some classical Gang of Four design patterns from the point of view of Scala, as well as features that are applicable specifically to this programming language. By now, you should have enough knowledge in order to build high quality, extendible, efficient, and elegant applications. Everything we have covered until now, if taken into consideration, should have a really positive impact on any application you will create.

Many of the things you saw in this book we wrote from scratch. This is really helpful in terms of understanding a given concept, but it takes time, and in real-world applications, using a library that gives us some functionalities is usually preferred. There are a number of different libraries available, which are accessible through a simple Google search and address just about anything you can think of. Except the fact that this could save a lot of time, it also means...