Learning Functional Programming with JavaScript ES6+

Course details

Want to write more robust, maintainable code? In this course, discover how this can be accomplished with functional programming, and learn about the functional concepts at the heart of many JavaScript frameworks and programs. Functional programming is a radically different way of writing code. While at first it may seem a bit counterintuitive, once you get comfortable with it, you may find that your code becomes much easier to maintain, as well as more performant. This course aims to teach you everything you need to know to start taking advantage of the incredible power of functional programming in your own code, starting with the basics and going all the way up to more advanced concepts such as recursion, partial application, currying, and more.

Learning objectives
Understand and apply the core concepts of functional programming.
Use first-class functions to improve the readability and flexibility of your code.
Manipulate array and object data using JavaScript's built-in functional utilities.
Take your functional programming knowledge to the next level with advanced concepts such as partial application, recursion, and memoization.

Concepts

0. Introduction

01 - Functional programming will change the way you think about code
02 - What you should know
03 - Basic setup

1. Introductory Functional Concepts

04 - The goal of functional programming
05 - Declarative vs. imperative programming
06 - Immutability
07 - Separation of data and functions
08 - Converting object-oriented to functional code
09 - First-class functions
10 - Ensuring immutability with ESLint
11 - Installing and setting up ESLint
12 - Ensuring immutability - Finalize ESLint

2. First-Class Functions

13 - JavaScript arrow function syntax
14 - Using functions as data
15 - Creating arrays of functions
16 - Passing functions as arguments
17 - Returning functions
18 - Understanding closure
19 - Higher-order functions
20 - Tour of CoderPad
21 - Solution - More higher-order functions

3. JavaScript Array Manipulation

22 - Basics of functional data manipulation
23 - The spread operator
24 - Using the map() function
25 - Using the filter() function
26 - Using the every() and some() functions
27 - Preventing mutation with the slice() function
28 - Using the sort() function
29 - Using the reduce() function
30 - Combining array functions
31 - Solution - Recreating the map() function

4. Advanced Functional Concepts

32 - Currying and partial application
33 - Recursion
34 - Memoization

5. Code Conversion Challenges

35 - Solution - Count occurrences
36 - Solution - Anagrams

Conclusion

37 - Next steps in your ES6+ journey