Learning Functional JavaScript
Publisher: Packt Publishing
Final Release Date: July 2015
Run time: 2 hours 20 minutes

A deep dive into functional programming with practical examples from both server and client-side JavaScript code

Learning Functional JavaScript will show you how to build powerful abstractions by combining many small and simple functions, and how to strip your data modeling to the necessities. We start by investigating the power of higher-order functions by diving right into the implementation of the sample application. We then elaborate by partially applying and composing functions before we end up with lazy evaluation to boost our abstraction power and performance.

Right from the start we'll dive into the implementation of a text-based adventure game. We will also see how function composition is used to solve specific problems in this domain by combining highly generic functions. We learn function programming techniques that help improve asynchronous code used to load the game from disk.

Later we'll become acquainted with a few other examples as well, as we learn about designing applications around an immutable data structure. And we end our journey with a discussion of recursion and how it relates to lazy data structures, and show examples of using previously discussed techniques on infinite data sets.

At the end of the course, you’ll be proficient with the basic functional programming techniques and will be able to optimize your JavaScript code by applying them. Learning Functional JavaScript teaches you all the basic functional programming techniques and shows you how to apply them to JavaScript, and how they can be used to solve highly practical problems.

Who this course is for

Learning Functional JavaScript is for any JavaScript programmer (both backend and frontend) who has a firm grasp of the language but is looking to broaden their skillset. No prior experience with functional programming concepts is necessary.

Knowledge about basic JavaScript concepts such as JavaScript objects and functions is a prerequisite.

What you will learn from this course

  • Explore higher-order functions, what they are and how to work with them
  • Solve issues related to asynchronous methods effectively by using promises
  • Use a library such as immutable.js to implement immutability
  • Implement immutability with Facebook’s React for super fast user interfaces
  • Combine a “functional core” to build a web application where most of the code is functional
  • Make efficient use of recursion with big data sets to make code easier to visualize

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