Book Image

Professional Scala

By : Mads Hartmann, Ruslan Shevchenko
Book Image

Professional Scala

By: Mads Hartmann, Ruslan Shevchenko

Overview of this book

This book teaches you how to build and contribute to Scala programs, recognizing common patterns and techniques used with the language. You’ll learn how to write concise, functional code with Scala. After an introduction to core concepts, syntax, and writing example applications with scalac, you’ll learn about the Scala Collections API and how the language handles type safety via static types out-of-the-box. You’ll then learn about advanced functional programming patterns, and how you can write your own Domain Specific Languages (DSLs). By the end of the book, you’ll be equipped with the skills you need to successfully build smart, efficient applications in Scala that can be compiled to the JVM.
Table of Contents (12 chapters)

Summary


In this chapter, we covered the type system and polymorphism. We also covered the different types of variance which provide a way to constrain parameterized types. Finally, we covered some advanced types such as abstract type members, option, and so on.

In the next chapter, we will cover implicits, which will make working with external libraries more pleasant. We will cover implicit conversions and finally cover ad hoc polymorphism through the use of type classes.