Summary:
I did migrate a project KEEPING 2.3 compatibility.
I got some syntax errors:
in XCode 7.3 APIs:
public protocol UIViewControllerContextTransitioning : NSObjectProtocol {
// The view in which the animated transition should take place.
@available(iOS 2.0, *)
public func containerView() -> UIView?
in Xcode 8 APIs is
public func containerView() -> UIView
so no more "?"
Steps to Reproduce:
- open Xcode
- use
let v = transitionContext.containerView()
v!.addSubview(fromView)
v!.addSubview(toView)
- move to XCode 8 and migrate to 2.3
let v = transitionContext.containerView()
v.addSubview(fromView)
v.addSubview(toView)
Xcode will suggest to remove "!"
