Toby Hutton wrote:
One of the tricks I found early on is to understand where to use 'try' (since by default input is consumed even if a parser fails) but apart from that just read Daan's page, even though it's out of date, and look at how all these cool combinators work.
Ah yes, reading that document and using 'try' is a good tip. This is what I cam up with: qualifiedIdentStar :: CharParser st [ String ] qualifiedIdentStar = do try identDotStar <|> qualifiedIdentifier where identDotStar = do s <- sepEndBy1 identifier dot char '*' return (s ++ [ "*" ]) Cheers, Erik -- ----------------------------------------------------------------- Erik de Castro Lopo ----------------------------------------------------------------- "It has been discovered that C++ provides a remarkable facility for concealing the trival details of a program -- such as where its bugs are." -- David Keppel