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<!doctype html> <title>CodeMirror: Clojure mode</title> <meta charset="utf-8"/> <link rel=stylesheet href="../../doc/docs.css"> <link rel="stylesheet" href="../../lib/codemirror.css"> <script src="../../lib/codemirror.js"></script> <script src="clojure.js"></script> <style>.CodeMirror {background: #f8f8f8;}</style> <div id=nav> <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a> <ul> <li><a href="../../index.html">Home</a> <li><a href="../../doc/manual.html">Manual</a> <li><a href="https://github.com/codemirror/codemirror">Code</a> </ul> <ul> <li><a href="../index.html">Language modes</a> <li><a class=active href="#">Clojure</a> </ul> </div> <article> <h2>Clojure mode</h2> <form><textarea id="code" name="code"> ; Conway's Game of Life, based on the work of: ;; Laurent Petit https://gist.github.com/1200343 ;; Christophe Grand http://clj-me.cgrand.net/2011/08/19/conways-game-of-life (ns ^{:doc "Conway's Game of Life."} game-of-life) ;; Core game of life's algorithm functions (defn neighbours "Given a cell's coordinates, returns the coordinates of its neighbours." [[x y]] (for [dx [-1 0 1] dy (if (zero? dx) [-1 1] [-1 0 1])] [(+ dx x) (+ dy y)])) (defn step "Given a set of living cells, computes the new set of living cells." [cells] (set (for [[cell n] (frequencies (mapcat neighbours cells)) :when (or (= n 3) (and (= n 2) (cells cell)))] cell))) ;; Utility methods for displaying game on a text terminal (defn print-board "Prints a board on *out*, representing a step in the game." [board w h] (doseq [x (range (inc w)) y (range (inc h))] (if (= y 0) (print "\n")) (print (if (board [x y]) "[X]" " . ")))) (defn display-grids "Prints a squence of boards on *out*, representing several steps." [grids w h] (doseq [board grids] (print-board board w h) (print "\n"))) ;; Launches an example board (def ^{:doc "board represents the initial set of living cells"} board #{[2 1] [2 2] [2 3]}) (display-grids (take 3 (iterate step board)) 5 5) ;; Let's play with characters (println \1 \a \# \\ \" \( \newline \} \" \space \tab \return \backspace \u1000 \uAaAa \u9F9F) ;; Let's play with numbers (+ 1 -1 1/2 -1/2 -0.5 0.5) </textarea></form> <script> var editor = CodeMirror.fromTextArea(document.getElementById("code"), {}); </script> <p><strong>MIME types defined:</strong> <code>text/x-clojure</code>.</p> </article>
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