[Haskell-cafe] Parsec: Where's +++?

[Greg Fitzgerald]

> Text.ParserCombinators.ReadP.(+++) :: ReadP a -> ReadP a -> ReadP a

Wow, fast and complete, Thanks Don!    :)

Would it make sense to derive instances of Applicable and Alternative
for ReadP?  Something like this maybe:

instance Applicative ReadP where
	pure = return
	(<*>) = ap

instance Alternative ReadP where
	empty = pfail
	(<|>) = (<++)

Thanks,
Greg