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| author | Valerio Virgillito | 2012-02-15 17:04:39 -0800 |
|---|---|---|
| committer | Valerio Virgillito | 2012-02-15 17:04:39 -0800 |
| commit | fe71cb9aa1700199c0089166ad54fc56eb760644 (patch) | |
| tree | b0c7c24b1f45a079e1c09312ca716e3d35aecad4 /imports/codemirror/mode/haskell/index.html | |
| parent | 747616980cad14f0b65fbcc7f497ed9680a39d29 (diff) | |
| parent | d366c0bd1af6471511217ed574083e15059519b5 (diff) | |
| download | ninja-fe71cb9aa1700199c0089166ad54fc56eb760644.tar.gz | |
Merge branch 'refs/heads/master' into components
Diffstat (limited to 'imports/codemirror/mode/haskell/index.html')
| -rwxr-xr-x | imports/codemirror/mode/haskell/index.html | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/imports/codemirror/mode/haskell/index.html b/imports/codemirror/mode/haskell/index.html new file mode 100755 index 00000000..15706e71 --- /dev/null +++ b/imports/codemirror/mode/haskell/index.html | |||
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| 1 | <!doctype html> | ||
| 2 | <html> | ||
| 3 | <head> | ||
| 4 | <title>CodeMirror: Haskell mode</title> | ||
| 5 | <link rel="stylesheet" href="../../lib/codemirror.css"> | ||
| 6 | <script src="../../lib/codemirror.js"></script> | ||
| 7 | <script src="haskell.js"></script> | ||
| 8 | <link rel="stylesheet" href="../../theme/elegant.css"> | ||
| 9 | <style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style> | ||
| 10 | <link rel="stylesheet" href="../../doc/docs.css"> | ||
| 11 | </head> | ||
| 12 | <body> | ||
| 13 | <h1>CodeMirror: Haskell mode</h1> | ||
| 14 | |||
| 15 | <form><textarea id="code" name="code"> | ||
| 16 | module UniquePerms ( | ||
| 17 | uniquePerms | ||
| 18 | ) | ||
| 19 | where | ||
| 20 | |||
| 21 | -- | Find all unique permutations of a list where there might be duplicates. | ||
| 22 | uniquePerms :: (Eq a) => [a] -> [[a]] | ||
| 23 | uniquePerms = permBag . makeBag | ||
| 24 | |||
| 25 | -- | An unordered collection where duplicate values are allowed, | ||
| 26 | -- but represented with a single value and a count. | ||
| 27 | type Bag a = [(a, Int)] | ||
| 28 | |||
| 29 | makeBag :: (Eq a) => [a] -> Bag a | ||
| 30 | makeBag [] = [] | ||
| 31 | makeBag (a:as) = mix a $ makeBag as | ||
| 32 | where | ||
| 33 | mix a [] = [(a,1)] | ||
| 34 | mix a (bn@(b,n):bs) | a == b = (b,n+1):bs | ||
| 35 | | otherwise = bn : mix a bs | ||
| 36 | |||
| 37 | permBag :: Bag a -> [[a]] | ||
| 38 | permBag [] = [[]] | ||
| 39 | permBag bs = concatMap (\(f,cs) -> map (f:) $ permBag cs) . oneOfEach $ bs | ||
| 40 | where | ||
| 41 | oneOfEach [] = [] | ||
| 42 | oneOfEach (an@(a,n):bs) = | ||
| 43 | let bs' = if n == 1 then bs else (a,n-1):bs | ||
| 44 | in (a,bs') : mapSnd (an:) (oneOfEach bs) | ||
| 45 | |||
| 46 | apSnd f (a,b) = (a, f b) | ||
| 47 | mapSnd = map . apSnd | ||
| 48 | </textarea></form> | ||
| 49 | |||
| 50 | <script> | ||
| 51 | var editor = CodeMirror.fromTextArea(document.getElementById("code"), { | ||
| 52 | lineNumbers: true, | ||
| 53 | matchBrackets: true, | ||
| 54 | theme: "elegant" | ||
| 55 | }); | ||
| 56 | </script> | ||
| 57 | |||
| 58 | <p><strong>MIME types defined:</strong> <code>text/x-haskell</code>.</p> | ||
| 59 | </body> | ||
| 60 | </html> | ||