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

# Definition
Recursion is the process in which a function calls itself during runtime. It stops at the **base case**. The base case is a check which specifies the final level of recursion. 

We can think of recursion as boxes within boxes, with each recursive call being a box. Recursion grows in a nested manner, and always reduces back to the original call.





For more on the theory of recursion, check out the [Wikipedia page](https://en.wikipedia.org/wiki/Recursion_(computer_science)).

Recursion is an integral part of functional programming as it increases the computing power of functions, albeit, at the cost of memory. 

Like JavaScript, Reason also supports recursion. However, the syntax is slightly different.


Let's take the example of an algorithm which computes the *n*-th Fibonacci number. In the Fibonacci sequence, each number is a sum of the previous two numbers in the sequence. The first and second values are `0` and `1`. Here are the first 7 numbers in the Fibonacci sequence:
```
 0, 1, 2, 3, 5, 8, 13...
```

The pseudo-code would look something like this:

This lesson will teach us how to implement recursion in ReasonML.

A Brief Introduction

Data Types

Identifiers

Data Structures

Conditional Expressions

Functions

Loops

Variants

Objects

Recursive Functions

Definition