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

Designing Functions - Recursion

In Chapter 8, Connecting Functions – Pipelining and Composition, we considered yet more ways to create new functions out of combining previous existing ones. Here, we are going to get into a different theme: how to actually design and write functions, in a typically functional way, by applying recursive techniques.

We will be covering the following topics:

  • Understanding what recursion is and how to think in order to produce recursive solutions
  • Applying recursion to some well-known problems, such as making a change or the Tower of Hanoi
  • Using recursion instead of iteration to re-implement some higher-order functions from earlier chapters
  • Writing search and backtrack algorithms with ease
  • Traversing data structures, such as trees, to work with file system directories or with the browser DOM
  • Getting around some limitations caused by browser...