I was hoping to hear more discussion about performance. At the root of this seems to be a flexbox-esque implementation in Swift. Yoga, one such flexbox implementation written in C, has touted much better performance over UIKit for a while. How do apps built with SwiftUI compare to their UIKit alternatives? How would it compare with some solutions already in the Swift OSS community that utilize flexbox? [Texture](http://texturegroup.org/) comes to mind but I'm sure there are others.

It must be so much fun to work on a project that impacts so many developers. Thanks again!