Probably https://developer.apple.com/videos/wwdc/2012/?id=243 https://developer.apple.com/videos/wwdc/2012/?id=243 I haven't watched it yet, but it's been on my

Probably https://developer.apple.com/videos/wwdc/2012/?id=243 https://developer.apple.com/videos/wwdc/2012/?id=243 I haven't watched it yet, but it's been on my to-watch list for a while now.