ReasonML has been skyrocketing in popularity lately, and for good... reason. Very recently developed by Facebook, it provides users a strong-typed, clean, and efficient syntax for JavaScript, which makes it great for web development. 

This course will get you up to speed programming in Reason. You'll start by learning how to create simple data objects and build up to more powerful tools such as functions and data structures. Along the way, interactive quizzes and exercises will help you gain a stronger grasp of the language.

Anyone looking to put themselves on the cutting-edge of web development would be well served to have a look at this course.

Functional Programming with ReasonML

## `val` Mutation

Similar to records, we can modify the values in an object by making them mutable. Let's take a look at the `circle` object from the previous lesson.

# `val` Mutation

Similar to records, we can modify the values in an object by making them mutable. Let's take a look at the `circle` object from the previous lesson.

In this lesson, we'll learn how to make object values mutable.

A Brief Introduction

Data Types

Identifiers

Data Structures

Conditional Expressions

Functions

Loops

Variants

Objects

Mutability

`val` Mutation