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

Becoming Functional - Several Questions

Functional programming (or FP) has been around since the earliest days of computing, and is going through a sort of revival because of its increased use with several frameworks and libraries, most particularly in JavaScript (JS). In this chapter, we shall do the following:

  • Introduce some concepts of FP to give a small taste of what it means.
  • Show the benefits (and problems) implied by the usage of FP and why we should use it.
  • Start thinking about why JavaScript can be considered an appropriate language for FP.
  • Go over the language features and tools that you should be aware of in order to fully take advantage of everything in this book.

By the end of this chapter, you'll have the basic tools that we'll be using in the rest of the book, so let's get started by learning about functional programming.