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About Erlang


hello() ->
  "Hello, World!".

80 coding exercises for Erlang on Exercism. From Saddle Points to Raindrops.

Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.

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Key Features of Erlang



Multi-clause functions with pattern matching and guards are the building blocks of Erlang code.

Dynamically typed

Erlang has no compile-time type checks, favoring run-time pattern matching.


All data in Erlang is immutable, allowing for safer and easier-to-reason-about concurrency.


Erlang uses the actor model - shared-nothing concurrency via message passing.

Fault tolerant

Erlang runs in a VM known for running low-latency, distributed and fault-tolerant systems.

Flexible package manager

Can pull in both Erlang and Elixir packages, both public and private

Get mentored the Erlang way

Every language has its own way of doing things. Erlang is no different. Our mentors will help you learn to think like a Erlang developer and how to write idiomatic code in Erlang. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in Erlang - they'll help you discover the things you don't know that you don't know.

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Community-sourced Erlang exercises

The Erlang track on Exercism has 80 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.

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