[swift-evolution] Keyword for protocol conformance

Charles Srstka cocoadev at charlessoft.com
Thu Aug 25 22:06:47 CDT 2016

Is there a reason that adding a “retro” keyword on extensions meant to retroactively apply a protocol is unacceptable?


> On Aug 25, 2016, at 6:44 PM, Xiaodi Wu via swift-evolution <swift-evolution at swift.org> wrote:
> Chris, as I wrote above, this idea has been discussed previously on several occasions, and the principal reason why it has been abandoned each time is that it cannot accommodate retroactive modeling. I'll refer you again to three previous threads discussing this and closely related matters:

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