[monkey_slap]

Really cool! I'd argue that Swift doesn't really have much to do with this, more "Animations in iOS".

You brought up a couple of neat concepts that I wasn't aware of, especially "UISystemAnimation.Delete".

[mathewsanders]

Yeah, you're right.

The main goal was try and introduce these APIs to designers, since there seems to be a current of interest around designers getting excited about learning Swift.