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author | Hugues Hiegel <root@paranoid> | 2015-03-11 16:55:04 +0100 |
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committer | Hugues Hiegel <root@paranoid> | 2015-03-11 16:55:04 +0100 |
commit | 99f904adcc37d93c90defcd8ce898598e25be212 (patch) | |
tree | 60a6c7b7b9cf012d6c0e8dcf5c7f4fe0a5b6fc49 /codemirror_ui/lib/CodeMirror-2.3/mode/haskell/index.html | |
parent | b2034fdfec040a67988e543a911208ef2491ce7a (diff) |
Diffstat (limited to 'codemirror_ui/lib/CodeMirror-2.3/mode/haskell/index.html')
-rw-r--r-- | codemirror_ui/lib/CodeMirror-2.3/mode/haskell/index.html | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/codemirror_ui/lib/CodeMirror-2.3/mode/haskell/index.html b/codemirror_ui/lib/CodeMirror-2.3/mode/haskell/index.html new file mode 100644 index 0000000..15706e7 --- /dev/null +++ b/codemirror_ui/lib/CodeMirror-2.3/mode/haskell/index.html @@ -0,0 +1,60 @@ +<!doctype html> +<html> + <head> + <title>CodeMirror: Haskell mode</title> + <link rel="stylesheet" href="../../lib/codemirror.css"> + <script src="../../lib/codemirror.js"></script> + <script src="haskell.js"></script> + <link rel="stylesheet" href="../../theme/elegant.css"> + <style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style> + <link rel="stylesheet" href="../../doc/docs.css"> + </head> + <body> + <h1>CodeMirror: Haskell mode</h1> + +<form><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 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 + | 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 + in (a,bs') : mapSnd (an:) (oneOfEach bs) + + apSnd f (a,b) = (a, f b) + mapSnd = map . apSnd +</textarea></form> + + <script> + var editor = CodeMirror.fromTextArea(document.getElementById("code"), { + lineNumbers: true, + matchBrackets: true, + theme: "elegant" + }); + </script> + + <p><strong>MIME types defined:</strong> <code>text/x-haskell</code>.</p> + </body> +</html> |