Elm

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Elm is a pure, functional language that compiles to javascript
Track mentors

8 Mentors

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

1,479 Students

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

42 Exercises

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

About Elm

Elm is a pure, functional language that compiles to javascript.

It was designed by Evan Czaplicki as part of writing his thesis on Concurrent FRP for Functional GUIs and evolved into a language to help make making user interfaces better.

Elm's goal is to be the simplest and best language for making web-based user interfaces.

Elm aims to completely eliminate runtime exceptions by combining an aggressively helpful compiler with solid architectural principles.

You can learn more about Elm at the official website.

Join the Elm track
module HelloWorld exposing (..)

helloWorld : Maybe String -> String
helloWorld name =
    case name of
        Just name ->
            "Hello, " ++ name ++ "!"

        Nothing ->
            "Hello, World!"

Exercism is a great website

What I like about it is that I am able to solve the challenges in a TDD way working in a environment that I am familiar (my own PC not a browser IDE) and the cherry on the top of the cake is that I have access to code reviews.

Relaxed. Encouraging. Supportive.

Meet the Elm Track mentors

Once you join the Elm 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 Nat Knight

Nat Knight website

I like Elm for its friendliness: I'm more confident in my Elm code than I am in code in any other language, and I never feel pressured to use things I don't understand.
Avatar of Aaron Strick

Aaron Strick website

Elm was my introduction to typed languages and a gateway for me to functional programming. I was lucky enough to learn it on the job, and have since adopted it as my main frontend language.
Avatar of Jake Varness

Jake Varness GitHub Page

Elm is a great language for folks to learn functional programming. Elm was the first functional programming language I've learned, and is great for teaching fundamental concepts and paradigms used when creating single-page web applications!
Avatar of Vasanth Pappu

Vasanth Pappu

I am drawn to Elm because it is a safe, reliable, and refactorable alternative to building webapps. It's an approachable language that not only supports the dynamic nature of greenfield projects, but it can also be adopted in small steps within legacy apps implemented in other front-end solutions.
Avatar of Nathan Chere

Nathan Chere NathanChere.com.au

I like to code.
Avatar of Yeong Sheng, Tan

Yeong Sheng, Tan https://github.com/yeongsheng-tan

I was working on our front-end EmberJS codebase back in 2014, and beginning to toy with ReactJS. Given I've not touched Javascript since 2005, EmberJS and ReactJS did not feel right at home for me. Then Redux came along, and that was when I found elm-lang which did everything that React+Redux provided, with a friendly compiler, less boiler-plate code, and the safety of no runtime ever once it compiles.
Fun. Challenging. Interesting

Community-sourced Elm exercises

These are a few of the 42 exercises on the Elm track. You can see all the exercises here.

Atbash Cipher
easy
misc
Largest Series Product
easy
misc
All Your Base
easy
misc
Triangle
easy
misc
Accumulate
easy
recursion
transforming
Hello World
easy
strings

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

Join the Elm Track