Is there any data on Swift adoption among the popular apps/companies? E.g. last I remember hearing, Facebook was still on ObjC/C++, but Uber has gone all in.<p>One use at Google is internal tools according to this post: <a href="https://news.ycombinator.com/item?id=15701107" rel="nofollow">https://news.ycombinator.com/item?id=15701107</a>