No idea, maybe the private parts of the code, Safari isn't open source, or is coming later.

In any case I would have liked to have more info during the deep dive sessions.

As it is, Meet with Apple on security (a 5h long event) had much more information.

Rewrite in Swift

Presumably because MIT is even more permissive and it’s a change in Apple’s behavior.

Yes they are using Claude Code - not the Xcode agents.

It worries me. I hope Codex adoption picks up there.

It would be interesting to see their internal guidance on LLM use. It’s a massive amount of new power that has to be wielded carefully. That kind of guidance might mean the survival or downfall of some big corps in the next few years.

These days I mainly write Rust but I did write a semi complex iOS app and enjoyed Swift. I just didn't love how slow the type checker was and how it got lost. I recall having to break things into smaller bits to help the compiler, and there were some oddities about the language.

The gap between the two languages is quite small, it just makes me wish Apple was also all-in on Rust

Does it borrow borrow checker?

Swift and Rust were developed at similar times. I think of them more as having similar influences than borrowing from each other.