[swift-evolution] [Pitch] Introducing role keywords to reduce hard-to-find bugs

[Erica Sadun]

> On Jun 16, 2017, at 12:21 PM, Tino Heth <2th at gmx.de> wrote:
> 
> The described problem might be one of the most famous itches of the language, but imho the bar for new keywords* should be higher than that — and there are alternatives:
> 
> First, I guess many would like to see this to be valid Swift:
> 
> protocol Foo {
> 	func bar() {
> 		print("Default implementation called")
> 	}
> }

I think there's a lot of people who want this. I'd have to do a search through the archives but hasn't it been said that this isn't likely to happen soon?


-- E


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