On Friday, 29 April 2016 at 19:11:24 UTC, tsbockman wrote:
Rare as in, "effecting only a very small amount of real world code" - not as in "effecting only a very small number of people".
I'm not sure if actually affects just a small number of real world cases. I think that majority of medium to large projects will want to apply some sort of behavior to multiple hierarchies.
Additionally, any libraries that provide a base class with a mixin require inheritors to know about that mixin and provide it in their own code. It certainly isn't going to happen in every case, but if the needed functionality is provided by mixins, then users of the library could have problems.
