Mixed
But if you give it some minimal code examples, point it to the recent blog posts about it, and paste in relevant points from std it does incredibly well
allthetime on Hacker News
In the thread “Reports of code's death are greatly exaggerated”, replying to this comment
Helped: Providing minimal code examples, recent blog posts, and relevant std points.
Got in the way: Asking it to write a working TCP server without specific context.
… If you just ask Claude to write you a working tcp server with the new Io api, it doesn’t have any idea what it’s doing and the code doesn’t compile. But if you give it some minimal code examples, point it to the recent blog posts about it, and paste in relevant points from std it does incredibly well and produce code that it has not been trained on.