2008/9/30 wman <[EMAIL PROTECTED]>:
> I got asked how to do one particular thing in excel, which led to discssion
> with "our local MSOffice expert".
> During the discussion I stated that's it too much of a PITA and that I'd
> rather write a script.
> Long story short, I promised him a one-liner to "show the power and beauty
> of Haskell".
>
> I got the csv package from hackage, modified the parseCSVFromFile so it's
> returns IO CSV rather than IO (Either ParseError CSV), and finished with
> following code
>
> (writeFile "output.csv") =<< (liftM printCSV $ liftM (map updateLine) $
> parseCSVFromFile "input.csv")
>
> Is there room for improvement ?
> Could it still be made into one-liner without modifying the csv module (and
> without resorting to
> case parseCSVFromFile "input.csv" of { Left _ -> []; Right x -> x}
> kind of tricks) ?How about: parseCSVFromFile "in.csv" >>= return . either (const "error!") printCSV >>= writeFile "out.csv" using Data.Either (either) ? Graham _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
