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September 27, 2016 17:45
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Haskell implementation of the C++ provided at https://medium.com/@nirjhor/functional-programming-in-c-8bdbd903ee32#.ehikr76vp
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| import Data.Set (fromList, intersection, size) | |
| import Data.List (foldl1, map) | |
| process :: String -> String | |
| process = show . size . foldl1 intersection . map fromList . lines | |
| main :: IO () | |
| main = interact process |
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