mirror of
https://github.com/janickiy/yii2-nomer
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54 lines
No EOL
2.3 KiB
HTML
54 lines
No EOL
2.3 KiB
HTML
<!doctype html>
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<title>CodeMirror: Haskell 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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<link rel="stylesheet" href="../../theme/elegant.css">
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<script src="../../lib/codemirror.js"></script>
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<script src="../../addon/edit/matchbrackets.js"></script>
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<script src="haskell.js"></script>
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<style type="text/css">
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.CodeMirror {
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border-top: 1px solid black;
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border-bottom: 1px solid black;
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}
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</style>
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<div id=nav>
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<a href="http://codemirror.net">
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<h1>CodeMirror</h1>
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<img id=logo src="../../doc/logo.png">
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</a>
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<ul>
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<li>
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<a href="../../index.html">Home</a>
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<li>
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<a href="../../doc/manual.html">Manual</a>
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<li>
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<a href="https://github.com/codemirror/codemirror">Code</a>
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</ul>
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<ul>
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<li>
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<a href="../index.html">Language modes</a>
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<li>
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<a class=active href="#">Haskell</a>
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</ul>
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</div>
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<article>
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<h2>Haskell mode</h2>
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<form>
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<textarea id="code" name="code"> module UniquePerms ( uniquePerms ) where -- | Find all unique permutations of a list where there might be duplicates. uniquePerms :: (Eq a) => [a] -> [[a]] uniquePerms = permBag . makeBag -- | An unordered collection where duplicate values are
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allowed, -- but represented with a single value and a count. type Bag a = [(a, Int)] makeBag :: (Eq a) => [a] -> Bag a makeBag [] = [] makeBag (a:as) = mix a $ makeBag as where mix a [] = [(a,1)] mix a (bn@(b,n):bs) | a == b = (b,n+1):bs |
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otherwise = bn : mix a bs permBag :: Bag a -> [[a]] permBag [] = [[]] permBag bs = concatMap (\(f,cs) -> map (f:) $ permBag cs) . oneOfEach $ bs where oneOfEach [] = [] oneOfEach (an@(a,n):bs) = let bs' = if n == 1 then bs else (a,n-1):bs
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in (a,bs') : mapSnd (an:) (oneOfEach bs) apSnd f (a,b) = (a, f b) mapSnd = map . apSnd </textarea>
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</form>
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<script>
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var editor = CodeMirror.fromTextArea(document.getElementById("code"),
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{
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lineNumbers: true,
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matchBrackets: true,
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theme: "elegant"
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});
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</script>
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<p>
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<strong>MIME types defined:</strong> <code>text/x-haskell</code>.</p>
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</article> |