Book Image

Learn Scala Programming

By : Slava Schmidt
Book Image

Learn Scala Programming

By: Slava Schmidt

Overview of this book

The second version of Scala has undergone multiple changes to support features and library implementations. Scala 2.13, with its main focus on modularizing the standard library and simplifying collections, brings with it a host of updates. Learn Scala Programming addresses both technical and architectural changes to the redesigned standard library and collections, along with covering in-depth type systems and first-level support for functions. You will discover how to leverage implicits as a primary mechanism for building type classes and look at different ways to test Scala code. You will also learn about abstract building blocks used in functional programming, giving you sufficient understanding to pick and use any existing functional programming library out there. In the concluding chapters, you will explore reactive programming by covering the Akka framework and reactive streams. By the end of this book, you will have built microservices and learned to implement them with the Scala and Lagom framework.
Table of Contents (19 chapters)

Project overview and setup

We already implemented our bakery project three times using different technologies in Chapter 11, An Introduction to the Akka and Actor Models, to Chapter 13, Basics of Akka Streams. Let's recap what this is about for the readers who aren't familiar with the third section of this book.

The bakery project

The bakery contains a few employees working together to produce delicious cookies. The structure of their communication is represented in the following diagram:

Each of the employees is skilled in a specific area:

  • The Manager drives the process by taking the results of the work of each of the participants and giving them to the next step in the flow. They also create initial shopping...