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

As we discussed earlier, a function performs a certain task and returns a value. This implies that the function will contain an *expression*.

## The Need for Functions

A function can be used repeatedly, which helps us avoid writing redundant code. 

Let's look at a simple program where we calculate and print the double of an integer:

As we discussed earlier, a function performs a certain task and returns a value. This implies that the function will contain an *expression*.

# The Need for Functions

A function can be used repeatedly, which helps us avoid writing redundant code. 

Let's look at a simple program where we calculate and print the double of an integer:

Let's learn the logic and syntax needed to create our first function!

A Brief Introduction

Data Types

Identifiers

Data Structures

Conditional Expressions

Functions

Loops

Variants

Objects

Function Definition

The Need for Functions