[Haskell-cafe] Re: what is inverse of mzero and return?

In article <878y6k700z.fsf@qrnik.zagroda>, Marcin 'Qrczak' Kowalczyk <qrczak@knm.org.pl> wrote:

...

I think mplus should be separated into two functions.

This would prevent using mplus in a single parser which - depending on the underlying monad used - backtracks or not.

Exactly. -- Ashley Yakeley, Seattle WA