<div dir="ltr">Thanks a lot, I've had a hunch it was possible to get rid of those those liftM's. I turned it into:<br>
<br>
(writeFile "output.csv") . printCSV . (map updateLine) . (either (error
"Chyba pri cteni CSV.") id) =<< parseCSVFromFile "input.csv"<br>
<br>
and am sincerely hoping he will try to decypher it's meaning ;-)))<br><br>On Tue, Sep 30, 2008 at 9:01 PM, Simon Brenner <span dir="ltr"><<a href="mailto:olsner@gmail.com">olsner@gmail.com</a>></span> wrote:<br>
<div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Something like this perhaps:<br>
<br>
writeFile "output.csv" . printCSV . map updateLine . fromRight =<<<br>
parseCSVFromFile "input.csv"<br>
<br>
(with fromRight = either (error "fromRight :: Left") id or something equivalent)<br>
</blockquote></div><br><br></div>