Functional Programming in Scala

This international bestseller has been revised with new exercises, annotations, and full coverage of Scala 3.

In Functional Programming in Scala, Second Edition you will learn how to

Recognize and write purely functional code
Work with errors without using exceptions
Work with state and concurrency
Interact with functional structures that define common behaviors
Write code that performs I/O without sacrificing functional programming

Functional Programming in Scala has helped over 30,000 developers discover the power of functional programming. You’ll soon see why reviewers have called it “mindblowing”! The book smooths the complexity curve of functional programming, making it simple to understand the basics and intuitive to progress to more advanced topics. Concrete examples and exercises show you FP in the real world and reveal how it can improve your everyday coding practices. This second edition comes packed with the latest standards of FP, as well as full code updates to Scala 3, and its new language features.

About the Technology
Functional code is easy to test, reuse, and parallelize, and it’s practically immune to whole categories of state-related bugs. With its strong functional features, familiar syntax, and seamless interoperability with Java, there’s no better place to start learning functional programming than the flexible Scala language.

About the Book
In Functional Programming in Scala, Second Edition you’ll learn functional programming from first principles. Hands-on exercises and examples make it easy to start thinking and coding functionally. This revised edition contains extensive exercise annotations to help you explore FP in depth, along with steps to build your own functional libraries in Scala. Once the functional lightbulb goes on, you’ll never look at coding the same way again.

What's Inside
Recognize and write purely functional code
Work with errors without using exceptions
Work with state and concurrency
Interact with functional structures that define common behaviors

About the Reader
For Java or Scala programmers. No knowledge of functional programming required.