Andrew Coppin wrote: > But here's a > question: what is the purpose of the MonadPlus class?
It gives you a way of working with monads as monoids. Consider a Parsec
example:
metasyntactic = text "foo" `mplus` text "bar" `mplus` text "baz"
You'll get back whichever one matched, in left-to-right-order, or mzero
(a parse failure) if all of them fail.
<b
_______________________________________________
Haskell-Cafe mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/haskell-cafe
