Deferring and Delegating in Swift 2 (Xcode 7 beta 3) - updated on July 19, 2015 defer delegate guard Swift throws Xcode 7 beta 3 +
Closures that Throw: Rethrows in Swift 2 on June 10, 2015 do-try-catch errors ErrorType rethrows Swift 2 throws Xcode 7 beta 1 +