Explore ReasonML's growing popularity and its strong-typed syntax for JavaScript. Learn about creating data objects, functions, and data structures through interactive quizzes and exercises.

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

# What is the `option` Type?

In theory, Reason does not have **nullable** types. Such types can have a value of *null* or in other words, nothing. 

We'll never see a null `int` or `string` object. They must always contain some value. 

However, sometimes, we need to cater for an identifier that has a null value. Reason's solution to this problem is the `option` type.

The `option` is a variant type which allows an object to have some value or no value at all.

# The Structure
An `option` consists of two parts:

Let's learn about what the option variant type is in Reason.

A Brief Introduction

Data Types

Identifiers

Data Structures

Conditional Expressions

Functions

Loops

Variants

Objects

The option Type

What is the `option` Type?

The option Type

What is the option Type?

What is the `option` Type?