On Mon, 7 Oct 2013 10:40:13 +0100, Tom Ellis
Dear all,
I introduce a very simple extension to the Lens datatype from Control.Lens that allows it to work with Arrows:
https://gist.github.com/tomjaguarpaw/6865080
I would particularly like to discuss this with authors of Control.Lens to see if such an idea is suitable for inclusion in their library.
I have also started a Reddit discussion here:
http://www.reddit.com/r/haskell/comments/1nwetz/lenses_that_work_with_arrows...
Tom _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
The reason we don't tend to have combinators like ‘view’ or ‘over’ generalized in their return profunctor like that is because you very quickly run into type ambiguity issues.