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

47 Mentors

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

11,427 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 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.
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 Byron Anderson

Byron Anderson Byron's Programming Blog

Elixir is the language that I want to be using. Pattern matching + `with` + processes, oh my! It makes me excited to program again!
Avatar of CJ Ting

CJ Ting https://github.com/fate-lovely

I like Elixir for its awesome functional programming features and elegant syntax, it really makes programming enjoyable.
Avatar of Daniel Couper

Daniel Couper https://github.com/DanCouper

I'm a programmer working [mainly] with Elixir codebases. It's the first (and still the only) language I've learnt where everything Just Clicked. Beautiful underlying system, best-in-class tooling, best-in-class documentation.
Avatar of Percy Grunwald

Percy Grunwald

I have been writing Elixir for many years now and I find it a pleasure to write and read. Elixir is an extremely productive language with a beautiful syntax and has amazing performance for networked applications. I think it's an ideal choice for any web application or backend.
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.

Perfect Numbers
easy
pattern matching
enumeration
math
Grep
easy
enumerations
strings
Grains
easy
recursion
reduce
Simple Cipher
easy
encryption
string processing
Custom Set
medium
collections
enumeration
Say
easy
pattern matching

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

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