Book Image

Mastering JavaScript Functional Programming

By : Federico Kereki
Book Image

Mastering JavaScript Functional Programming

By: Federico Kereki

Overview of this book

Functional programming is a programming paradigm for developing software using functions. Learning to use functional programming is a good way to write more concise code, with greater concurrency and performance. The JavaScript language is particularly suited to functional programming. This book provides comprehensive coverage of the major topics in functional programming with JavaScript to produce shorter, clearer, and testable programs. You’ll delve into functional programming; including writing and testing pure functions, reducing side-effects, and other features to make your applications functional in nature. Specifically, we’ll explore techniques to simplify coding, apply recursion for loopless coding, learn ways to achieve immutability, implement design patterns, and work with data types. By the end of this book, you’ll have developed the JavaScript skills you need to program functional applications with confidence.
Table of Contents (22 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback
Connecting Functions - Pipelining and Composition
Answers to Questions


In this chapter, we have seen 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 is recursion and how to think recursively in order to solve problems, then moved on to see 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 do any side effects, by ensuring the immutability of arguments and data structures.