Re: [Haskell-cafe] Parsec (Zero or One of)

Paul Keir wrote:

I’m having some difficulty using the Parsec library, perhaps you could help. I’ve reduced my problem as shown below. I would like the ‘only_prod’ parser to require the reserved string “only”, _optionally_ followed by an identifier. As part of ‘mytest’, this should then be followed by the reserved string “end”.

Look into option, optional, and optionMaybe.