96 lines
2.7 KiB
HTML
96 lines
2.7 KiB
HTML
|
<!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="../../addon/edit/closebrackets.js"></script>
|
||
|
|
<script src="../../addon/edit/matchbrackets.js"></script>
|
||
|
|
<script src="clojure.js"></script>
|
||
|
|
<style>.CodeMirror {background: #f8f8f8;}</style>
|
||
|
|
<div id=nav>
|
||
|
|
<a href="https://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">
|
||
|
|
(ns game-of-life
|
||
|
|
"Conway's Game of Life, based on the work of
|
||
|
|
Christophe Grand (http://clj-me.cgrand.net/2011/08/19/conways-game-of-life)
|
||
|
|
and Laurent Petit (https://gist.github.com/1200343).")
|
||
|
|
|
||
|
|
;;; Core game of life's algorithm functions
|
||
|
|
|
||
|
|
(defn neighbors
|
||
|
|
"Given a cell's coordinates `[x y]`, returns the coordinates of its
|
||
|
|
neighbors."
|
||
|
|
[[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 neighbors cells))
|
||
|
|
:when (or (= n 3)
|
||
|
|
(and (= n 2)
|
||
|
|
(cells cell)))]
|
||
|
|
cell)))
|
||
|
|
|
||
|
|
;;; Utility methods for displaying game on a text terminal
|
||
|
|
|
||
|
|
(defn print-grid
|
||
|
|
"Prints a `grid` of `w` columns and `h` rows, on *out*, representing a
|
||
|
|
step in the game."
|
||
|
|
[grid w h]
|
||
|
|
(doseq [x (range (inc w))
|
||
|
|
y (range (inc h))]
|
||
|
|
(when (= y 0) (println))
|
||
|
|
(print (if (grid [x y])
|
||
|
|
"[X]"
|
||
|
|
" . "))))
|
||
|
|
|
||
|
|
(defn print-grids
|
||
|
|
"Prints a sequence of `grids` of `w` columns and `h` rows on *out*,
|
||
|
|
representing several steps."
|
||
|
|
[grids w h]
|
||
|
|
(doseq [grid grids]
|
||
|
|
(print-grid grid w h)
|
||
|
|
(println)))
|
||
|
|
|
||
|
|
;;; Launches an example grid
|
||
|
|
|
||
|
|
(def grid
|
||
|
|
"`grid` represents the initial set of living cells"
|
||
|
|
#{[2 1] [2 2] [2 3]})
|
||
|
|
|
||
|
|
(print-grids (take 3 (iterate step grid)) 5 5)</textarea></form>
|
||
|
|
<script>
|
||
|
|
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
|
||
|
|
autoCloseBrackets: true,
|
||
|
|
lineNumbers: true,
|
||
|
|
matchBrackets: true,
|
||
|
|
mode: 'text/x-clojure'
|
||
|
|
});
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<p><strong>MIME types defined:</strong> <code>text/x-clojure</code>.</p>
|
||
|
|
|
||
|
|
</article>
|