Using the new os_signpost API, we can easily place markers - signposts - in our code that can make profiling and debugging performance issues a lot simpler. In today's WWDC update, let's take a look at how to get started with this new tool!

In today's WWDC Update, let's take a look at how Core Animation this year has been made a bit more "Swifty", thanks to some better annotations and how many of its APIs that previously relied on strings now use synthesized enums and option sets.