Want to learn and master LFE?

Join Exercism’s LFE Track for access to 40 exercises with automatic analysis of your code and personal mentoring, all 100% free.

Explore exercises

About LFE

(defmodule leap
  (export (leap-year 1)))

(defun leap-year
  ([year] (when (=:= (rem year 400) 0))
   'true)
  ([year] (when (=:= (rem year 100) 0))
   'false)
  ([year] (when (=:= (rem year 4) 0))
   'true)
  ([_]
   'false))

40 coding exercises for LFE on Exercism. From Acronym to Beer Song.


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

See all LFE exercises on Exercism

Key Features of LFE


LFE

Core Erlang Foundation

With LFE, you can use Lisp features while reaping the benefits of Erlang VM.

Functional

Take advantage of features such as Function Composition and Pattern Matching.

Fault tolerant

LFE runs on the Erlang VM, ideal for low-latency and fault-tolerant systems.

S-expressions

LFE brought homoiconicity to the Erlang VM, as it supports Symbolic expressions.

Hot Code Loading

With LFE you can upgrade running systems without restarts, via hot code loading.

Macros

LFE supports metaprogramming via low-hygiene macros, ideal for creating DSLs.

Get mentored the LFE way

Every language has its own way of doing things. LFE is no different. Our mentors will help you learn to think like a LFE developer and how to write idiomatic code in LFE. 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 LFE - they'll help you discover the things you don't know that you don't know.

Learn more about mentoring

Community-sourced LFE exercises

The LFE track on Exercism has 40 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.

See all LFE exercises
LFE

Get started with the LFE track

The best part, it’s 100% free for everyone.