[swift-evolution] abstract keyWord proposal

[Vinicius Vendramini]

> On Dec 4, 2015, at 8:36 AM, Tal Atlas <me at tal.by> wrote:
> 
> I don't think there'd be much confusion with allowing protocol extensions to contain stored types but I could easily see that being very difficult to implement. 

I agree, I believe allowing stored types either in protocols or in classes might be very difficult to implement. I don’t even think this is allowed in Objective-C, probably for the same reason.