[Haskell-cafe] Re: PROPOSAL: Some more 'Applicative' combinators
apfelmus at quantentunnel.de
Wed Jan 9 05:26:47 EST 2008
Sterling Clover wrote:
> The more general question, which stems from a certain degree of
> ignorance on my part, is what uses folks have found for Alternative at
> all outside of parsing.
Alternative is the generalization of MonadPlus, so empty and <|> are
useful for lists and Maybe at least. But I'm not sure whether
many :: Alternative f => f a -> f [a]
and friends have any uses outside of parsing.
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