> On Mar 23, 2016, at 10:14 AM, Jordan Rose via swift-evolution
> <[email protected]> wrote:
>
>>
>> On Mar 23, 2016, at 10:11, Joe Groff via swift-evolution
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>>>
>>> On Mar 22, 2016, at 8:49 PM, Brent Royal-Gordon via swift-evolution
>>> <[email protected] <mailto:[email protected]>> 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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