On Mon, 18 Oct 2010, Gilmara Pompelli wrote:
Hello 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:
Where do you apply 'sort' ? You mean sort learquivo ? It must be fmap sort learquivo .
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