Hi, What is the proper way to implement a non-monadic function that checks whether a given value is correct and gives a proper error message otherwise ? What is the recommended option ?
* Either String a check val | valid val = Right val | otherwise = Left errorMsg * Maybe String check val | valid val = Nothing | otherwise = Just errorMsg Cheers, Jose _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
