One unwelcome quirk of Swift before 2.2 was that selectors could be written as strings, like this:
navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Tap!", style: .Plain, target: self, action: "buttonTaped")
If you look closely, I wrote "buttonTaped"
rather than "buttonTapped"
, but Xcode wasn't able to notify me of my mistake if either of those methods didn't exist.
This has been resolved as of Swift 2.2: using strings for selectors has been deprecated, and you should now write #selector(buttonTapped)
in that code above. If the buttonTapped()
method doesn't exist, you'll get a compile error – another whole class of bugs eliminated at compile time!
SPONSORED Still waiting on your CI build? Speed it up ~3x with Blaze - change one line, pay less, keep your existing GitHub workflows. First 25 HWS readers to use code HACKING at checkout get 50% off the first year. Try it now for free!
Sponsor Hacking with Swift and reach the world's largest Swift community!
Download all Swift 2.2 changes as a playground Link to Swift 2.2 changes
Link copied to your pasteboard.