Re: Improving void

Because there are many Functors for which (<$) provides better sharing and/or performance, and it has zero impact on anyone who has never heard of (<$). Sent from my iPad On Aug 6, 2013, at 2:32 AM, Malcolm Wallace wrote:

Can you explain why you think it is an improvement? To me, it looks like line noise.

Regards, Malcolm

On 5/08/2013, at 20:06, Edward Kmett wrote:

Right now the definition of Control.Monad.void is: void :: Functor f => f a -> f () void = fmap (const ()) I propose we replace it with void :: Functor f => f a -> f ()

void = (() <$) This expands out to the former definition by the default definition of (<$) and Data.Functor.Functor exports (<$) explicitly to make it possible to optimize this sort of thing. It seems a shame not to use it.

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