Beginning Scala 3

A Functional and Object-Oriented Java Language

By: David Pollak, Vishal Layka, Andres Sacco

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eText | 25 January 2022 | Edition Number 3

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Learn the latest version of Scala through simple, practical examples. This book introduces you to the Scala programming language, its object-oriented and functional programming characteristics, and then guides you through Scala constructs and libraries that allow you to assemble small components into high-performance, scalable systems.

Beginning Scala 3 explores new Scala 3 language features such as Top-level declarations, Creator applications, Extension methods to add extra functionality to existing types, and Enums. You will also learn new ways to manipulate types via Union types, intersection, literal, and opaque type aliases. Additionally, you'll see how Implicits are replaced by given and using clauses.

After reading this book, you will understand why Scala is judiciously used for critical business applications by leading companies such as Twitter, LinkedIn, Foursquare, the Guardian, Morgan Stanley, Credit Suisse, UBS, and HSBC - and you will be able to use it in your own projects.

What You Will Learn

Get started with Scala 3 or Scala language programming in general
Understand how to utilitze OOP in Scala
Perform functional programming in Scala
Master the use of Scala collections, traits and implicits
Leverage Java and Scala interopability
Employ Scala for DSL programming
Use patterns and best practices in Scala

Who This Book Is For

Those with a background in Java and/or Kotlin who are new to Scala. This book is also for those with some prior Scala experience who want to learn Scala version 3.