This content was released on Dec 6 2016. The official support period is 6-months from this date.
Review what you've learned in our video course iOS Concurrency with GCD & Operations, and get some hints and tips for handling concurrency in iOS.
This is a companion discussion topic for the original entry at https://www.kodeco.com/3648-ios-concurrency-with-gcd-and-operations/lessons/12