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About Emacs Lisp

(defun hello (&optional name)
  "Say hello, optionally to NAME."
  (let ((greetee (or name "World")))
    (concat "Hello, " greetee "!")))

63 coding exercises for Emacs Lisp on Exercism. From Binary Search to Pythagorean Triplet.


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Key Features of Emacs Lisp


Emacs Lisp

Simple syntax

Emacs Lisp's syntax is simple, expressive and easy to learn.

S-expressions

Both source code and data are expressed using nested lists.

Macros

It's easy to customize the language with Emacs Lisp's macro system.

Multi-paradigm

Emacs Lisp support imperative and functional programming styles.

Scripting

Emacs Lisp can be used as scripting language by using Emacs' batch mode.

Well Documented

Emacs Lisp is well documented right inside the editor.

Get mentored the Emacs Lisp way

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

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Community-sourced Emacs Lisp exercises

The Emacs Lisp track on Exercism has 63 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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Emacs Lisp

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