[acdlite]

I disagree, but I suppose this a matter of preference. For whatever it's worth, the React team did explore using a constraint-solver, but nixed the idea. They explain their reasoning here: https://www.youtube.com/watch?v=7rDsRXj9-cU&t=14m20s

[thramp]

Yeah, it is preference. I found that buying entirely into Autolayout + Storyboards makes for a really nice development experience.

And their reasoning makes sense. I totally get why they would avoid constraint-based layout.