[Haskell-cafe] MonadPlus versus Alternative

Sean Leather leather at cs.uu.nl
Sun Oct 30 14:29:20 CET 2011


On Sun, Oct 30, 2011 at 04:02, Gregory Crosswhite wrote:

> So is there any difference between the interpretation of MonadPlus and
> Alternative, or is the only difference between them that the former applies
> to Monad whereas the latter applies to Applicative?
>

Somewhat OT, but this led me to playing with ConstraintKinds:

https://github.com/spl/sandbox/blob/master/ConstraintKindsAlternativeMonadPlus.lhs

Regards,
Sean
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