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 learned how to write higher-order functions of our own that can either wrap another function to provide some new feature, alter a function's objective so that it does something else, or even provide totally new features, such as decoupling methods from objects or creating better finders. The main takeaway from this chapter is that you have a way of modifying the behavior of a function without actually having to modify its own code; higher-order functions can manage this in an orderly way.

In Chapter 7, Transforming Functions Currying and Partial Application, we'll keep working with higher-order functions and learn how to produce specialized versions of existing functions with predefined arguments by using currying and partial application.