> On Mar 23, 2016, at 10:14 AM, Jordan Rose via swift-evolution > <swift-evolution@swift.org> wrote: > >> >> On Mar 23, 2016, at 10:11, Joe Groff via swift-evolution >> <swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote: >> >>> >>> On Mar 22, 2016, at 8:49 PM, Brent Royal-Gordon via swift-evolution >>> <swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote: >>> >>> So, today is day 2 of Swift 2.2 being in the hands of mere mortals. This >>> evening, I walked into my weekly NSCoder Night meeting and talked to a >>> pretty experienced developer struggling with this: >>> >>> class EditEventViewController: UIViewController { >>> ... >>> @IBAction func cancel(sender: AnyObject?) { >>> cancel() >>> } >>> func cancel() { >>> // actual canceling logic is here >>> } >>> } >>> >>> class EditEventContainerViewController: UIViewController { >>> ... >>> func prepareForSegue(_ segue: UIStoryboardSegue, sender sender: >>> AnyObject?) { >>> switch segue.identifier { >>> ... >>> let cancelButton = >>> UIBarButtonItem(barButtonSystemItem: .Cancel, target: nil, action: nil) >>> cancelButton.target = vc >>> cancelButton.action = #selector(vc.cancel) >>> // This is the problem line >>> ... >>> } >>> } >>> } >>> >>> `vc.cancel` was, of course, ambiguous, and the SE-0021 `vc.cancel(_:)` >>> syntax can't select a Void function. I had to explain how to use `as Void >>> -> Void` to select the right version. >>> >>> This is merely an anecdote, but I think it may end up being an issue. >> >> Thanks for reporting this. I also saw this come up at least one other place: >> >> https://twitter.com/bendodson/status/712208662933200896 >> <https://twitter.com/bendodson/status/712208662933200896> >> >> I wonder if it's worth making #selector(vc.cancel()) work. What do you >> think, Doug? > > Very strong +1; I consider it a bug that we didn't have this already. It was > reported as SR-1016 <https://bugs.swift.org/browse/SR-1016>.
Yes, I agree. - Doug
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