[Haskell-cafe] Re: PROPOSAL: Some more 'Applicative' combinators

apfelmus 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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