An interactive problem website for learning Clojure: https://www.4clojure.com.

Anyone interested in contributing should check out the Issues page for ideas on what to work on.

Join us in #4clojure on freenode for help or discussion.

• Download and install leiningen.

• Download and install mongodb.

• The project uses clojail, which requires a security policy setup in your home directory (because Clojure's eval is unsafe if used improperly). Set up a file called .java.policy in your home directory. The contents should look vaguely like this:

   grant { permission java.security.AllPermission; };
  

  but see the readme of that project for more details.

• cd to the 4clojure project directory and run lein deps.

• Start up your mongodb, if you don't have autostart:

   mongod
  

• For the first time use, you will need to load the problem data. Run the script load-data.sh:

   ./load-data.sh
  

• Run lein ring server

• To run the tests: lein test

• David Byrne (dbyrne)
• Alan Malloy (amalloy)
• Anthony Grimes (raynes)
• Carin Meier (cmeier)
• Clint Harrison (clinteger)
• Darren Austin (darren)
• David Davis (daviddavis)
• Devin Walters (devn)
• Michael Kohl (citizen428)
• Martin Sander (0x89)
• Alex McNamara (amcnamara)
• Ara Jeknavorian (arajek)

Problem sources:

• Aaron Bedra's Clojure Koans
• Ninety-Nine Lisp Problems
• Project Euler

The source code for 4clojure is available under the Eclipse Public License v 1.0. For more information, see LICENSE.html.