Elixir

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Elixir is a dynamic, functional language designed for building scalable and maintainable applications. Elixir leverages the Erlang VM, known for running low-latency, distributed and fault-tolerant systems, while also being successfully used in web development and the embedded software domain.
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Track mentors

51 Mentors

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

14,684 Students

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

94 Exercises

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

About Elixir

defmodule HelloWorld do

  @doc """
  Greets the user by name, or by saying
  "Hello, World!" if no name is given
  """
  def hello(name \\ "World") do
    "Hello, #{name}!"
  end
end

Elixir, initially released in 2012, extends upon the already robust features of Erlang while also being easier for beginners to access, read, test, and write.

José Valim, the creator of Elixir, explains here how he built the language for applications to be:

  1. Distributed
  2. Fault-Tolerant
  3. Soft-Real-Time
  4. Hot-Code-Swapped (can introduce new code without stopping the server)

Elixir actually compiles down to bytecode and then runs on the BEAM Erlang Virtual Machine.

There is no "conversion cost" for calling Erlang, meaning you can run Erlang code right next to Elixir code.

Being a functional language, everything in Elixir is an expression.

Elixir has "First Class Documentation" meaning comments can be attached to a function, making it easier to retrieve.

Regular expressions are also given first class treatment, removing awkward escaping within strings.

Elixir's asynchronous communication implementation allows the code to be lightweight, yet incorporate high-volume concurrency.

Programmers use Elixir to handle thousands of requests and responses concurrently on a single server node.

It has been used successfully for microservices that need to consume and serve a multitude of APIs rapidly.

The Phoenix framework helps structure Elixir applications for the web.

Join the Elixir track

Self-contained finite problems with which to learn the language

I have spent time with the Clojure, Elixir & Go tracks and all have been incredibly beneficial, providing self-contained finite problems with which to learn the language. The Go language track has been wonderful in introducing me to the language, what idiomatic code is, and the many different ways in which one can solve a problem.

Relaxed. Encouraging. Supportive.

Meet the Elixir Track mentors

Once you join the Elixir 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 Cohen Carlisle

Cohen Carlisle https://medium.com/@CohenCarlisle

I love Elixir for its productivity, elegant syntax, and functional nature. I've written it professionally and for fun. I hope to help people get excited about Elixir and learn some things myself, as well.
Avatar of Paul Otto

Paul Otto https://github.com/potto007

I love Elixir for its pragmatic approach to functional programming, its small syntax, and its macro language. OTP on the BEAM (ErlangVM) is beautiful. I have professionally written and deployed networked software with Elixir.
Avatar of Jason Axelson

Jason Axelson GitHub

I am a fullstack web developer with experience in Ruby, Elixir, and Javascript (and wrote Java in a previous life). I love Elixir due to it's syntax (especially pattern matching) and the excellent concurrency primitives that it receives via Erlang and OTP.
Avatar of Adrian Gruntkowski

Adrian Gruntkowski Homepage

Over 2 years ago, exercism was one of the first places where I actively learned about idiomatic approach to writing programs in Elixir. Now, after working with the language day to day, I'd like to give back to this great community.
Avatar of Angelika Tyborska

Angelika Tyborska angelika.me

I'm a web developer. I work with Elixir, Ruby, and JavaScript. Elixir is my favorite because of its elegant syntax, great performance, pattern matching, and immutability. Let me help you make it your favorite too!
Avatar of Juan Pablo Lorenzo

Juan Pablo Lorenzo GitHub

Elixir was my first step in functional programming and since I started I am very surprised with this language, its community and the incredible capabilities that Elixir has to improve software development.
Fun. Challenging. Interesting

Community-sourced Elixir exercises

These are a few of the 94 exercises on the Elixir track. You can see all the exercises here.

Simple Linked List
easy
recursion
Markdown
medium
refactoring
Allergies
medium
binary operators
enumeration
Bob
easy
control flow
string processing
Rotational Cipher
easy
string processing
Passionate. Knowledgeable. Creative.

Meet the Elixir Track maintainers

The Elixir Maintainers are the brains behind the Elixir 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 Cohen Carlisle

Cohen Carlisle

I love Elixir for its productivity, elegant syntax, and functional nature. I've written it professionally and for fun. I hope to help people get excited about Elixir and learn some things myself, as well.
Avatar of Tim Austin

Tim Austin

Exercism has been a great way for me to stay current and expand my developer experience in new areas. I am excited to be working with the elixir track, because I appreciate the clarity/idiomaticity of the elixir language. I want others to enjoy this track as much as I have.
Avatar of Devon Estes

Devon Estes

Freelance senior developer into @elixir-lang.

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