Re:Apple’s use of Swift in iOS 12
by MaxBarraclough on Saturday September 29, 2018 @02:30PM
(#18101960)
Agree completely - I'm not convinced that Swift is so much better than Objective-C that it makes sense to throw out mature production code.
Mandatory link to Spolsky's blog post on exactly this:
https://www.joelonsoftware.com/2000/04/06/things-you-should-...
Apple could have continued using the existing software, rather than just throw away stable code for the sake of new devs to use a new language.