Elm

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

14 Mentors

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

3,047 Students

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

46 Exercises

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

About Elm

module HelloWorld exposing (helloWorld)


helloWorld : Maybe String -> String
helloWorld maybeName =
    case maybeName of
        Nothing ->
            "Hello, World!"

        Just name ->
            "Hello, " ++ name ++ "!"

Elm describes itself as a "delightful language for reliable webapps". It aims at producing web applications with great performances and no runtime exception.

Concretly, it is a functional programming language compiling to JavaScript. Its syntax and features originated from the ML family of languages, such as Haskell, but with a strong emphasis on learnability and simplicity.

You can learn more about elm on the official website, elm-lang.org. Newcomers should start with the elm guide, located at guide.elm-lang.org.

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Exercism is a great website

The reviews are incredibly helpful because they help me see things that I missed, learn about new ways and sometimes interesting discussions that can add a fun twist to maybe a simple problem.

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 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.
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 Léo Jeusset

Léo Jeusset https://github.com/leojpod

I worked with Elm professionaly and I love it! Trusting the language is such a relief on your mind, as a developer you can really start to express yourself and let the code flow, the compiler will watch your back!
Avatar of Michael Glass

Michael Glass website

I like elm and also I like you. I love elm because it's so easy to refactor my first draft into something beautiful. I hope you do, too.
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 Anthony Deschamps

Anthony Deschamps https://github.com/adeschamps

I use Elm for hobby projects and occasionally at work. I like it for a lot of technical reasons, but most of all for the great community.
Fun. Challenging. Interesting

Community-sourced Elm exercises

These are a few of the 46 exercises on the Elm track. You can see all the exercises here.

Pythagorean Triplet
medium
algorithms
conditionals
loops
integers
math
Space Age
easy
floating point numbers
All Your Base
medium
integers
math
transforming
Say
hard
strings
text formatting
transforming
Hello World
easy
strings
Phone Number
easy
parsing
transforming
Passionate. Knowledgeable. Creative.

Meet the Elm Track maintainers

The Elm Maintainers are the brains behind the Elm Track. They spend their spare time creating interesting and challenging exercises that we can all learn from. We are incredibly grateful for their hard work. Here are the bios of a few of the maintainers of this track.

Avatar of Kenneth Bogner

Kenneth Bogner

This maintainer has not added their bio yet.
Avatar of Matthieu Pizenberg

Matthieu Pizenberg

Passionate about robotics, photo, computer vision, and raclette!

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