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GeoTopo images for easier compiling; Lazy evalution; Logik

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Martin Thoma 2014-03-01 20:04:19 +01:00
parent 1eb807d278
commit 1938222321
11 changed files with 215 additions and 5 deletions
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documents/Programmierparadigmen/scripts/haskell/folds.hs Normal file
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@ -0,0 +1,12 @@
summer :: [Int] -> Int
summer = foldr (-) 0
summel :: [Int] -> Int
summel = foldl (-) 0
main :: IO ()
main = do
print (summer [1,2,3])
-- 0-(1-(2-3)) = 0-(1-(-1)) = 2
print (summel [1,2,3])
-- ((0-1)-2)-3 = -6