Elixir

Join the Elixir Track
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.
Join the Elixir Track
Track mentors

50 Mentors

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

13,129 Students

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

92 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 Fernando Mendes

Fernando Mendes https://mendes.codes

I'm a backend developer currently working with Elixir (and Ruby at times!). I've always been a huge fan of functional programming and the elegant syntax, performance and knack for distributed systems has made it my favorite language.
Avatar of Andreas Kammerloher

Andreas Kammerloher https://github.com/Odin94

I enjoy making things work elegantly more than just making them work and I consider myself a very honest and straightforward person. I value empathy and rational thinking. I enjoy learning about and debating ethics and philosophy. What I lack in formal education in these fields I make up for in curiosity and open-mindedness. I'm currently looking to get started with competitive programming and using Exercism to practice. I hope to accelerate people's progression through the Elixir track, as there is currently a huge lack in mentors and I'm sure it's frustrating people to wait many days for their code to be reviewed (although it does prepare us well for the realities of business :P).
Avatar of João Pedro de Carvalho

João Pedro de Carvalho https://github.com/sleepiejohn

I'm a Java guy during the days, Elixir and Rust by night, eager share ideas and take other's critics because there is no wrong question.
Avatar of Abhyudit Jain

Abhyudit Jain GitHub

I've been working with mostly JavaScript professionally and do some personal projects in Elixir. I love the whole philosophy of Erlang/Elixir's `Let it crash`. I love all the abstactions it provides in OTP.
Avatar of Yauheni Tsiarokhin

Yauheni Tsiarokhin

functional programming enthusiast
Avatar of Roman Chvanikov

Roman Chvanikov https://medium.com/@chvanikoff

I'm a long-time OTP developer (Erlang/Elixir with a strong focus on Elixir for the past 4 years) and will be glad to help anybody to dive into the languages.
Fun. Challenging. Interesting

Community-sourced Elixir exercises

These are a few of the 92 exercises on the Elixir track. You can see all the exercises here.

Largest Series Product
medium
enumeration
recursion
math
Phone Number
easy
string processing
pattern matching
Sublist
easy
lists
enumeration
Dominoes
medium
algorithms
enumerations
recursion
sorting
trees
Run Length Encoding
easy
algorithms
strings
Bowling
hard
structs
algorithms
pattern matching
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 Devon Estes

Devon Estes

Freelance senior developer into @elixir-lang.

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

Join the Elixir Track