Control.Monad proposal: Add whenJust

[Petr Pudlák]

+1

On 05/15/2013 06:14 PM, Edward Kmett wrote:
> Personally, I'd be all for just moving Foldable (and Traversable) into 
> the Prelude and retiring the monomorphic versions of the functions 
> they supply. Both abstractions have born the test of time, and its 
> hard to even envision Haskell without them at this point.
>
> I'm somewhat leery that we coud get this proposal past the "but it 
> makes it harder to introduce people to Haskell" backlash, but I'd 
> wholeheartedly support it.
>
> -Edward
>