[Haskell] Help-me read file
gilmarampompelli at gmail.com
Mon Oct 18 15:29:01 EDT 2010
I have a file with 100 lists, with 100 ints.
I have to read the file and apply the map and sort functions on lists.
II did it to read file:
learquivo :: FilePath -> IO ([[Int]])
learquivo s = do
conteudo <- readFile s
return (read conteudo)
But now applying the sort, the error appears:
Couldn't match expected type `[a]'
against inferred type `IO [[Int]]'
how can I fix?
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