| otherwise = return () or:
handleParseErrors errors = when (not . null $ errors) $ writeFile ..... 2011/6/20 Dmitri O.Kondratiev <[email protected]>: > Hi, > What is right way to do conditional IO? > For example, I need to write to file errors only in case they exist, > otherwise my function should do nothing: > > handleParseErrors errors > | (not . null) errors = writeFile "parse-errors.txt" (show errors) > | otherwise = ? > > What should be an 'otherwise' case ? > > Thanks! > > _______________________________________________ > Haskell-Cafe mailing list > [email protected] > http://www.haskell.org/mailman/listinfo/haskell-cafe > > -- Eugene Kirpichov Principal Engineer, Mirantis Inc. http://www.mirantis.com/ Editor, http://fprog.ru/ _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
