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


Pipelining and composition are techniques that are used to set up functions so that they work in sequence so that the output from a function becomes the input for the next function. There are two ways of looking at this: from a computer point of view, and from a mathematical point of view. We'll look at both in this section. Most FP texts start with the latter, but since I assume that most of you will prefer computers over math, let's start with the former instead.

Piping in Unix/Linux

In Unix/Linux, executing a command and passing its output as input to a second command, whose output will yield the input of a third command, and so on, is called a pipeline. This is quite a common application of the...