Re: [Haskell-beginners] Could not get parser ready

On Sun, Nov 05, 2017 at 06:51:57PM +0100, Marcus Manning wrote:

Hello,

I follow the instructions of script [1] in order to set up a parser functionality. But I' get into problems at page 202 with the code:

p :: Parser (Char,Char) p = do              x ← item              item              y ← item              return (x,y)

ghci and ghc throw errors: Prelude> let p:: Parser (Char,Char); p = do {x <- item; item; y <- item; return (x,y)}

Hello Marcus, what is the :type of `item`?