[Haskell] Help-me read file

[Henning Thielemann]

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

.