WWDC 2016 is over and there is still a lot to learn. This is a list of my seven favourite WWDC 2016 talks.
Playgrounds are a very powerful tool, but it hasn’t been possible to execute concurrent code yet. But since Xcode 8, you can do so.
It’s important to pay attention to compiler warnings. But in reality many developers tend to ignore warnings. In Xcode there is a very helpful build option called “Treat Warnings as Errors”