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

41 Mentors

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

9,962 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 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 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 Nathan Chere

Nathan Chere GitLab

I first got into Elixir in 2015 and haven't looked back. My day job still largely centres around .NET but Elixir is the language I remain the most passionate and excited about.
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 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 Ian Fosbery

Ian Fosbery https://www.codeguy.io

I've been a programmer for over 15 years. I've really gotten into functional programming in recent years, which is how I've come to love Elixir so much. Concurrency, fp, the Erlang VM - what's not to love?!
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.

Hexadecimal
easy
numbers
string processing
math
Run Length Encoding
easy
algorithms
strings
Minesweeper
medium
enumeration
reduce
algorithms
Diffie Hellman
medium
math
Twelve Days
easy
enumerations
reduce
string formatting
Isogram
easy
reduce
algorithms

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

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