thanks Micheal and Ertugrul! Sunil On Mon, Aug 8, 2011 at 5:15 PM, Ertugrul Soeylemez <es@ertes.de> wrote:
Sunil S Nandihalli <sunil.nandihalli@gmail.com> wrote:
module Main where import Prelude
stringToInt::String->Int stringToInt str = read str
main = do x<-getLine y<-stringToInt x print y
It is a type problem. Using the '<-' syntax for 'stringToInt' requires that it is a monadic function (like: String -> IO Int), but it is not. Since it is not monadic, you can simply let-bind the result to a name:
do xStr <- getLine let x = stringToInt xStr print x
Or more simply:
do xStr <- getLine print (stringToInt xStr)
Greets, Ertugrul
-- nightmare = unsafePerformIO (getWrongWife >>= sex) http://ertes.de/
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