It has been two weeks now since I wrote my proposal. First of all, thanks to all for their replies (and sorry for having started such a big discussion). Tom has mentioned, that there is (\(Right x)->x). I didn't consider that (shame on me), but I think it is perfect as it is short and easy to read. Also it shows the idea of unwrapping, something which "either undefined id" lacks. I think it is a good replacement and therefore withdraw my proposal. Meanwhile, it was proposed to include fromLeft :: a -> Either a b -> a fromRight :: b -> Either a b -> b I am a weak +1 on this. -- Anton On 05/20/2016 10:08 PM, Anton Felix Lorenzen wrote:
When working with Either, I am often missing two simple functions: fromRight :: Either a b -> b fromLeft :: Either a b -> a
It has been implemented a couple of times: http://hayoo.fh-wedel.de/?query=fromRight
But I don't want to depend on yet another library for such a basic function.
Could it be added?
Anton _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries