Elm

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

13 Mentors

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

2,580 Students

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

45 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 name =
    case name of
        Just name_ ->
            "Hello, " ++ name_ ++ "!"

        Nothing ->
            "Hello, World!"

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.

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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 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 Ilias Van Peer

Ilias Van Peer https://github.com/zwilias

I love everything about Elm. My days are spent programming in Elm as a professional, my weekends are spent working on open source Elm projects and packages. I'm a member of the Elm core team and you can always find me on the Elm-lang Slack!
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 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 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 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 Cedd Burge

Cedd Burge Blog Posts

I'm a software lead / architect / manager type thing and I have a strong focus on code quality. Elm is the first functional language I've learned and it's impressively easy. The language has a strong focus on simplicity and a single recommended way of doing things, which is a refreshing change in the Front End world. It sits very well in it's target niche, and the runtime essentially provides an impure abstract syntax tree interpreter, leaving all your code 100% pure / functional. There is a strong and vibrant community, which is both innovative and supportive to newcomers.
Fun. Challenging. Interesting

Community-sourced Elm exercises

These are a few of the 45 exercises on the Elm track. You can see all the exercises here.

Collatz Conjecture
easy
math
Isogram
easy
filtering
strings
Sum Of Multiples
easy
lists
transforming
math
Word Count
medium
maps
strings
transforming
Space Age
easy
floating point numbers
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.

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

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