Book Image

Mastering JavaScript Functional Programming - Second Edition

By : Federico Kereki
Book Image

Mastering JavaScript Functional Programming - Second Edition

By: Federico Kereki

Overview of this book

Functional programming is a paradigm for developing software with better performance. It helps you write concise and testable code. To help you take your programming skills to the next level, this comprehensive book will assist you in harnessing the capabilities of functional programming with JavaScript and writing highly maintainable and testable web and server apps using functional JavaScript. This second edition is updated and improved to cover features such as transducers, lenses, prisms and various other concepts to help you write efficient programs. By focusing on functional programming, you’ll not only start to write but also to test pure functions, and reduce side effects. The book also specifically allows you to discover techniques for simplifying code and applying recursion for loopless coding. Gradually, you’ll understand how to achieve immutability, implement design patterns, and work with data types for your application, before going on to learn functional reactive programming to handle complex events in your app. Finally, the book will take you through the design patterns that are relevant to functional programming. By the end of this book, you’ll have developed your JavaScript skills and have gained knowledge of the essential functional programming techniques to program effectively.
Table of Contents (17 chapters)
Technical Requirements


In this chapter, we've seen a common, simple problem, based on a real-life situation, and after analyzing several typical ways of solving that, we went for a functional thinking solution. We saw how to apply FP to our problem, and we found a more general higher-order solution that we could apply to similar problems with no further code changes. We saw how to write unit tests for our code to round out the development job.

Finally, we produced an even better solution (from the point of view of the user experience) and saw how to code it and how to unit test it. Now, you've started to get a grip on how to solve a problem functionally; next, in Chapter 3, Starting Out with Functions – a Core Concept, we'll be delving more deeply into functions, which are at the core of all FP.