2010-10-29 15:41:20 +00:00
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# Clojure Koans
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The Clojure Koans are a fun and easy way to get started with Clojure - no
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experience assumed or required. Just follow the instructions below to start
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making tests pass!
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2010-01-15 01:13:17 +00:00
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2010-05-27 18:22:26 +00:00
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2010-01-15 01:13:17 +00:00
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### Getting Started
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2010-05-27 01:16:28 +00:00
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The only things you need to run the Clojure Koans are:
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- JRE 1.5 or higher
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2010-10-29 15:07:11 +00:00
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- clojure-1.3.0-alpha1.jar
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2010-05-27 18:22:26 +00:00
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2010-10-29 15:07:11 +00:00
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clojure-1.3.0-alpha1.jar needs to be placed in a directory `lib` under this
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project.
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2010-05-27 01:16:28 +00:00
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2010-10-29 15:07:11 +00:00
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You can use Leiningen (http://github.com/technomancy/leiningen) to
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automatically install the Clojure jar in the right place.
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2010-05-27 01:16:28 +00:00
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2010-05-27 18:22:26 +00:00
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After you have leiningen installed, run
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2010-01-15 01:13:17 +00:00
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`lein deps`
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2010-11-01 18:13:48 +00:00
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which will download all dependencies you need to run the Clojure koans.
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2010-01-15 01:13:17 +00:00
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2010-05-27 18:22:26 +00:00
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2010-01-15 01:13:17 +00:00
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### Running The Koans
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To run the koans, simply run
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2010-10-29 15:07:11 +00:00
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`run.sh`
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2010-05-27 01:16:28 +00:00
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or, on Windows,
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`run.bat`
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2010-10-29 15:07:11 +00:00
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2010-11-01 18:13:48 +00:00
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You'll see something like this:
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FAIL in clojure.lang.PersistentList$EmptyList@1 (equalities.clj:1)
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We shall contemplate truth by testing reality, via equality.
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expected: (= __ true)
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actual: (not (= nil true))
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The output is telling you that you have a failing test in equalities.clj.
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So open that file up and make it pass! In general, you just fill in the
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blanks to make tests pass. Sometimes there are several (or even an infinite
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number) of correct answers: any of them will work in these cases.
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The koans differ from normal TDD in that the tests are already written for you,
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so you'll have to pay close attention to the failure messages, because up until
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the very end, making a test pass just means that the next failure message comes
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up.
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While it's very easy (especially at first) to just fill in the blanks making
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things pass, you should work slowly, making sure you understand why the answer
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is what it is. Enjoy your path to Clojure enlightenment!
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2010-10-29 15:41:20 +00:00
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2010-10-29 15:43:32 +00:00
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### Contributing
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Patches are encouraged! Make sure the answer sheet still passes (`test.sh`, or
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`test.bat` on Windows), and send a pull request.
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The file ideaboard.txt has lots of good places to start
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2010-10-29 15:41:20 +00:00
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### Contributors (in order of appearance)
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- Aaron Bedra
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- Colin Jones
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- Eric Lavigne
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- Nuno Marquez
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### Credits
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These exercises were started by [Aaron Bedra](http://github.com/abedra) of
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[Relevance, Inc.](http://github.com/relevance) in early 2010, as a learning
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tool for newcomers to functional programming. Aaron's macro-fu makes these
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koans extremely simple and fun to use, and to improve upon, and Relevance's
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initiative
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Using the [koans](http://en.wikipedia.org/wiki/koan) metaphor as a tool for
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learning a programming language started with the
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[Ruby Koans](http://rubykoans.com) by [EdgeCase](http://github.com/edgecase).
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