Re: [Haskell-cafe] MonadPlus or Alternative or ...?

Check the laws that instances of MonadPlus and Alternative should comply with to help you make your decision. Cheers Mark Sean Leather wrote:

I want to generalize a set of functions from lists to some functor type. I require the following three operation types.

f a a -> f a f a -> f a -> f a

Should I choose MonadPlus and use these?

mzero return mplus

Or should I choose Alternative and use these?

empty pure (<|>)

Or should I make my own class? Or is there another option?

Thanks, Sean ------------------------------------------------------------------------

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