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91 lines
2.5 KiB
91 lines
2.5 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="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="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></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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; Conway's Game of Life, based on the work of: |
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;; Laurent Petit https://gist.github.com/1200343 |
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;; Christophe Grand http://clj-me.cgrand.net/2011/08/19/conways-game-of-life |
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(ns ^{:doc "Conway's Game of Life."} |
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game-of-life) |
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;; Core game of life's algorithm functions |
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(defn neighbours |
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"Given a cell's coordinates, returns the coordinates of its neighbours." |
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[[x y]] |
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(for [dx [-1 0 1] dy (if (zero? dx) [-1 1] [-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 neighbours cells)) |
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:when (or (= n 3) (and (= n 2) (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-board |
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"Prints a board on *out*, representing a step in the game." |
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[board w h] |
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(doseq [x (range (inc w)) y (range (inc h))] |
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(if (= y 0) (print "\n")) |
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(print (if (board [x y]) "[X]" " . ")))) |
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(defn display-grids |
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"Prints a squence of boards on *out*, representing several steps." |
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[grids w h] |
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(doseq [board grids] |
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(print-board board w h) |
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(print "\n"))) |
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;; Launches an example board |
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(def |
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^{:doc "board represents the initial set of living cells"} |
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board #{[2 1] [2 2] [2 3]}) |
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(display-grids (take 3 (iterate step board)) 5 5) |
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;; Let's play with characters |
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(println \1 \a \# \\ |
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\" \( \newline |
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\} \" \space |
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\tab \return \backspace |
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\u1000 \uAaAa \u9F9F) |
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;; Let's play with numbers |
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(+ 1 -1 1/2 -1/2 -0.5 0.5) |
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</textarea></form> |
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<script> |
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var editor = CodeMirror.fromTextArea(document.getElementById("code"), {}); |
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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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