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 saw how we can use recursion, a basic tool in FP, as a powerful technique to create algorithms for problems that would probably require far more complex solutions otherwise. We started by considering what recursion is and how to think recursively in order to solve problems, then moved on to see some recursive solutions to several problems in different areas, and ended by analyzing potential problems with deep recursion and how to solve them.

In Chapter 10, Ensuring Purity – Immutability, we shall get back to a concept we saw earlier in the book, function purity, and see some techniques that will help us guarantee that a function won't have any side effects by ensuring the immutability of arguments and data structures.