App Transport Security in iOS 9 and OS X 10.11 mandates the usage of HTTPS over HTTP. This will necessitate in some changes to applications that connect to the Internet.
There are several options for handling table views in Swift, depending on whether they are empty or optional.
Creating UUIDs with TextExpander is really easy.
The replacement for UISearchDisplayController is really easy to use.
Authenticating with Game Center seems to have some bugs.