我搜集的haskell学习资源，将持续在这里更新

我搜集的haskell学习资源，将持续在这里更新

• 如何学习haskell http://stackoverflow.com/questions/1012573/how-to-learn-haskell
• haskell解题99    http://haskell.org/haskellwiki/H-99%3a_Ninety-Nine_Haskell_Problems
• 范畴论与haskell http://en.wikibooks.org/wiki/Haskell/Category_theory
• project euler，也是一套难度渐增的题目 http://projecteuler.net/index.php?section=problems
• 发现一位国内程序员研究haskell的博客：http://www.yi-programmer.com/blog/list.html
• http://www.haskell.org/haskellwiki/All_About_Monads

 

quicksort实在是太经典了，记录下

qs' :: Ord a => [a] -> [a]
qs' []     = []
qs' (x:xs) = lhs xs ++ [x] ++ rhs xs
        where lhs xs = qs' $ filter (<=x) xs
              rhs xs = qs' $ filter (> x) xs