[RubenSandwich]

I'm sorry but that is likely never going to happen. iOS is a custom version of OS X, which is a fork of FreeBSD. That C is likely never going to be completely replaced.

I love Swift, it's a great language, but we shouldn't rewrite our stacks every time a better language comes out. This is where the engineering trade-offs come in. Maybe over time, but over a long period of time.

[xvector]

I think you are correct in saying that iOS will never get rewritten.

But I think that you are incorrect in saying that it shouldn’t get re-written.

Memory-safety is a compelling reason to re-write something. It’s not just a flavor of the month thing, there are real and large security benefits to rewriting your shit in a memory safe language.

Honestly for any large projects (ie scale of iOS) it is amusing to see people think that they can forego a memory safe language and still be “secure.” Subscribe to the iOS discloses vulnerability mailing list and take a look at how many of those vulnerabilities are because of the lack of memory safety. Hint: it’s often the vast majority of them.