Re: Adding (??) into Data.Functor

I am a -1 on both proposals, i.e., on having a special map for the "apply to a fixed argument" case. On 16.02.2014 21:42, Nikita Volkov wrote:

Also, since the variable input of this combinator seems to be on the functor side I suggest to inverse the arguments order order, i.e.:

mapf :: a -> f (a -> b) -> f b

This way it'll target composition. And since it's a combinator over functions it's a pretty important thing. E.g.: mapf 2 . map (*) $ [1..10]

I'd simply write map (2 *) [1..10] Cheers, Andreas -- Andreas Abel <>< Du bist der geliebte Mensch. Depeartment of Computer Science and Engineering Chalmers and Gothenburg University, Sweden andreas.abel@gu.se http://www2.tcs.ifi.lmu.de/~abel/