Comment by LoganDark
2 days ago
I'm surprised the code has visible LLM smells. Though, I shouldn't be surprised. I hope the important bits are still human-controlled (and the same for Apple's many operating systems that absolutely deserve to remain stable and understood).
I assure you, every inch of the interpreter code has been stared at by humans, a lot. TBH even the assembly generated by it has.
All 150 kloc in six months by two people? Actually, it sounds like way too much code for the task unless 70+% of it is tests.
> By the end of the project, we wrote nearly four times as many lines of test code as we wrote for the Swift interpreter itself.
From what I got Apple is using claude code A LOT internally
Yes they are using Claude Code - not the Xcode agents.
It worries me. I hope Codex adoption picks up there.
thats a shame if true, they really should be dog-fooding that horrible agent ui in xcode to bring it up to a usable state
7 replies →
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.