Please, can you help me with following?... I have a working code but am not very happy with the error handling in "updateStocks" function. It does what it should, but I would like to implement some kind of guards. Problem is that it always ends it some error + am not sure if I can use guards in inside defined variable. Pls. what would you suggest? httpExceptionHandler :: HttpException -> IO L.ByteString httpExceptionHandler e = (putStrLn "Error: simpleHttp returned exception ")
(return L.empty)
getStocks :: String -> IO L.ByteString getStocks url = (simpleHttp url) `X.catch` httpExceptionHandler updateStocks :: IO String updateStocks = do yqlResult <- getStocks testQuery case yqlResult of x | x == L.empty -> return "return exception" | otherwise -> return "here I will call another function" thanks, m.