[Haskell-beginners] Parsec problem

[Andres Löh]

Hi.

> keyValue = do
>                     fieldName <- many letter
>                     spaces
>                     char '='
>                     spaces
>                     fieldValue <- parseToNewLine
>                     return (fieldName,fieldValue)
>
> main = parseTest keyValue "key=\n"
>
> I don’t understand why te code above doesn’t parse to (“key”,””)

The problem is that the \n is already consumed by spaces. The
subsequent parseToNewLine fails.

Cheers,
  Andres

-- 
Andres Löh, Haskell Consultant
Well-Typed LLP, http://www.well-typed.com