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