Clojure Meetup Düsseldorf

Here is a collection of katas to learn the Clojure programming language.

All projects need Leiningen.

At first, it might be a good start to check out the ClojureScript Koans, where you can interactively test out Clojure / ClojureScript and get familiar with the syntax.

After this, you can use the katas from this repository or browse to exercism.io to get more exercises.

Start hacking

Auto-Test

We try to keep all projects up to date. Currently, they are all equipped with lein test-refresh which can be used to automatically execute the tests when you changed a file. Your IDE / Editor might have the same feature, like cider-auto-test-mode. Start lein test-refresh with the command

lein test-refresh

Embedded IDE

The projects also are shipped with the embedded editor Nightlight. This is a Web-IDE, which runs directly in your code. It is available as a Leiningen-Plugin and you can start it with

lein nightlight

Navigate to http://localhost:4000 and start hacking with an IDE and the InstaREPL.

Project Descriptions

All projects have their own descriptions with some hints to solve them. Make sure to read their README-files.

Levels of Difficulty

This repository contains several katas. Here are some advices where to get started:

Beginners

These katas are very easy for beginners:

• Roman Numerals: First tests given, test-driven development style. Convert integer to roman-numeral-styled Strings.
• Rover: Implement a mars rover. Contains a nice graphical implementation

Advanced

• Game of Life: Applying the basic rules of game of life
• Gilded Rose: Refactor crowded code
• Tiny Maze: Find your way through a maze
• Die Hard: Die-hard sale with some edge-cases

For clojure.spec

Katas designed to learn clojure.spec:

• Codebreaker: First write your specs, then the code!