I often hear the argument that &quot;Swift is changing too fast, let&#x27;s wait until it settles down&quot; but the changes so far have really been minute. It&#x27;s not even a factor at all for us.<p>Taking our app (40 kloc) and our SDK (4 kloc) from 1.2 to 2 took us less than 3 hours. Almost all changes were correctly migrated by the built in migration tool.<p>The Bro app couldn&#x27;t possibly take more than 15 minutes.