Functional Programming In Scala
Stop fighting side effects and start building robust, testable software.
Functional Programming in Scala: A Comprehensive Guide is your definitive roadmap to mastering the FP paradigm using the power of Scala 3. From the foundational concepts of immutability and pure functions to advanced topics like Monads, Type Classes, and effect management, this book provides clear explanations and practical, modern code examples. Learn to write code that is inherently safer, easier to reason about, and a joy to maintain.
Minimum price
$7.99
$9.99
You pay
$9.99Author earns
$7.99PDF
EPUB
About
About the Book
Functional Programming in Scala: A Comprehensive Guide
Master the art of building robust, testable, and maintainable applications by embracing the Functional Programming paradigm in Scala 3.
Functional Programming (FP) is no longer a niche concept; it is the proven path to writing safer, more predictable software, especially in concurrent and distributed systems. Scala, with its powerful type system and seamless blend of OOP and FP features, is the perfect language to unlock this paradigm.
This book is designed for experienced programmers who are new to Scala functional programming, providing a clear, step-by-step progression from the basics to advanced design patterns.
What You Will Master:
•Foundations of Purity: Understand the core principles of immutability, pure functions, and referential transparency—the bedrock of functional design.
•Data Modeling with ADTs: Leverage Scala 3's enum and case class to model complex domain logic using Algebraic Data Types (ADTs) and master the power of Pattern Matching.
•Functional Control Flow: Replace exceptions and nulls with expressive, type-safe error handling using the Option and Either types.
•Abstraction and Composition: Deep dive into Higher-Order Functions (HOFs), Currying, and collection combinators (map, filter, flatMap) to build declarative data pipelines.
•Advanced Design Patterns: Demystify abstract concepts like Functors, Applicatives, and Monads, and learn how to use Type Classes to achieve flexible, decoupled polymorphism (demonstrated with a practical JSON serialization example).
•Managing Side Effects: Understand the critical role of the IO Monad (from libraries like Cats Effect and ZIO) to isolate and manage side effects, keeping your core business logic pure.
•Practical Application: Walk through a hands-on project: building and testing a functional JSON parser from scratch, showcasing how FP principles lead to highly testable code.
Every concept is illustrated with modern Scala 3 code examples, ensuring you gain not just theoretical knowledge, but the practical skills needed to apply FP techniques to your next project. Start your journey to becoming a confident functional programmer today.
Target Audience:
•Programmers with experience in languages like Java, Python, or C# and have basic knowledge about Scala and looking to transition to Scala functional programming.
•Intermediate Scala developers who want to deepen their understanding of advanced FP concepts and design patterns.
•Anyone seeking to write more robust, testable, and maintainable code.
Author
About the Author
Jitin Kayyala
Jitin Kayyala is a Sun Certified Java Developer with over 15 years of experience designing and developing enterprise-scale web applications. He specializes in cloud-native architecture, microservices, and DevOps practices. His technical leadership spans Java, Spring Boot, AWS, Kubernetes, and distributed systems architecture.
Contents
Table of Contents
The Leanpub 60 Day 100% Happiness Guarantee
Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
Now, this is technically risky for us, since you'll have the book or course files either way. But we're so confident in our products and services, and in our authors and readers, that we're happy to offer a full money back guarantee for everything we sell.
You can only find out how good something is by trying it, and because of our 100% money back guarantee there's literally no risk to do so!
So, there's no reason not to click the Add to Cart button, is there?
See full terms...
Earn $8 on a $10 Purchase, and $16 on a $20 Purchase
We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
In fact, authors have earned over $14 million writing, publishing and selling on Leanpub.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
Write and Publish on Leanpub
You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!
Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.
Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.