Adding (??) into Data.Functor

[Twan van Laarhoven]

Would (<$$>) be a sensible name? To match (<**>) from Control.Applicative

   (<$$>) :: Functor f => a -> f (a -> b) -> f b

I don't really feel the need for such a function, though.


On a related note, the documentation for (<**>) is pretty bad. It says "A 
variant of <*> with the arguments reversed." but that doesn't make it clear that 
the function is different from `flip (<*>)`.


Twan

On 16/02/14 19:51, Dimitri Sabadie wrote:
> Hi all,
>
> I often come up using this snippet:
> map ($ a) l
> with
> l :: [a -> b]
>
> In Control.Lens, there’s a nice combinator for that, (??) :
>
> l ?? a
>
> I think it’d be great to include that in Data.Functor, because it’s a very
> common use case.
>
>
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