[Haskell-beginners] Re: Re: Design Question: fmap with two lists

[Maciej Piechotka]

On Fri, 2009-12-25 at 21:10 -0500, Brent Yorgey wrote:
> There is such a class in the category-extras package, although it is
> so general that it is probably not worth the effort of trying to
> understand it unless you really need the extra abstraction.
> 
> -Brent

For the record - what is the name of it? I tried to search through
category-extras twice.

Regards