And what about languages like JavaScript and Kotlin which have already integrated the optional-chaining operator themselves?
Re:Apple is patenting Swift features
by solarkraft on Friday January 25, 2019 @10:11AM
(#18998581)
This is interesting because it raises questions about what is a fork. Can I fork Swift and throw out everything except for the patented part and then merge it with my project?
Judges don't typically fall for stuff like that. Just because you created something by using the fork process, the end result after your giant purge isn't recognizable as a fork of Swift.
So if you fork Swift, you’re covered. If you don’t form Swift, then you’re not covered.
Note that the Apache license is much stronger / better than the PATENTS.txt files accompanying projects like those from Microsoft / Facebook, because those usually don’t cover forks and are designed to protect the parent company.