ReasonML

Join the ReasonML Track
ReasonML is a strongly typed functional language which compiles to both Javascript and native.
Track mentors

1 Mentor

Our mentors are friendly, experienced ReasonML developers who will help teach you new techniques and tricks.
Track students

144 Students

Join hundreds of students who have enjoyed learning and improving their skills by taking this track.
Track exercises

22 Exercises

Hundreds of hours have gone into making these exercises fun, useful, and challenging to help you enjoy learning.

About ReasonML

Reason is a syntax and toolchain geared towards Javascript programmers, based on the functional language OCaml

Being statically typed, it is likely to be safer than Javascript, but has powerful type inference which means type annotations do not get in your way.

The Exercism exercises will compile directly to JS, but Reason can be compiled via the OCaml toolchain to native code, IoS, Android, and even microcontrollers

Join the ReasonML track
let message = () => "Welcome to Reason!";

A tremendous learning opportunity to explore the depth of your own knowledge

Exercism is fantastic in learning new languages but that is not the extent of it. If you are a "more experienced" programmer you may have encountered impostor syndrome: the idea you don't really know what you think you know. Exercism lets you solve problems and put them in the space of open feedback which is a tremendous learning opportunity to explore the depth of your own knowledge. Even if you have been programming in a language for awhile it is worth checking into Exercism to see where you stand with current implementation practices.

Relaxed. Encouraging. Supportive.

Meet the ReasonML Track mentors

Once you join the ReasonML language track, you will receive support and feedback from our team of mentors. Here are the bios of a few of the mentors of this track.

Avatar of Stephen Bastians

Stephen Bastians https://github.com/stevejb71

Reason's a great choice for Javascript programmers who want to get intoi statically typed functional programming.
Fun. Challenging. Interesting

Community-sourced ReasonML exercises

These are a few of the 22 exercises on the ReasonML track. You can see all the exercises here.

Bob
easy
control flow conditionals
pattern recognition
regular expressions
strings
Roman Numerals
easy
strings
Isogram
easy
strings
lists
Run Length Encoding
medium
strings
converting strings to ints
Word Count
easy
list map function
lists
pattern recognition
regular expressions
variants
Minesweeper
medium
strings
arrays

Get started with the ReasonML track. As with everything on Exercism, it's 100% free!

Join the ReasonML Track