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asheshambasta/return2.hs

Created February 13, 2016 21:21
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simple IO stuff
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return2.hs
--file: ch07/return2.hs
import Data.Char(toUpper)
isYes :: String -> Bool
isYes str = (toUpper . head $ str) == 'Y'
isGreen :: IO Bool
isGreen = putStrLn "green your favourite colour dawg?" >>
getLine >>= (\str -> return (isYes str))
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