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Elm

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

15 Mentors

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

3,819 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.

Concretely, 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

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.

Bud Chirica, Scotland
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 Christoph Lipp

Christoph Lipp https://github.com/ser1us

I use Elm for all my personal projects where I need a frontend framework (instead of React for example). Elm's development is "slow" compared to other languages but this makes it even more appealing to me.
Avatar of Wolfgang Schuster

Wolfgang Schuster https://github.com/wolfadex

I love Elm for it's explicitness and beautiful error messages. I've work with Elm professionally, as well as in my hobby projects. I've coding since 2006 and have been building web apps professionally since 2012.
Avatar of Percy Grunwald

Percy Grunwald

If it compiles, it will work forever. I've never written applications with fewer runtime errors than I have in Elm. Don't let the learning curve disuade you, once you're proficient in Elm you won't look back.
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 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 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
Hamming
easy
filtering
strings
Allergies
medium
bitwise operations
enumerations
filtering
Pangram
easy
booleans
strings
Hello World
easy
strings
Bob
easy
conditionals
strings
text formatting
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 Cedd Burge

Cedd Burge Blog posts

I am a software lead / manager / architect type thing. I mostly program in Elm, C#, Python, Typescript and Delphi. I mentor on Exercism and for Code First Girls
Avatar of Matthieu Pizenberg

Matthieu Pizenberg

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

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

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