I had a detailed conversion with chatGPT about how to gracefully handle terminating conditions of a rust program. It summarized cogently to register at_exit()’s for each thread, panic handlers, and register signal handlers. It advised and explain in detail on my query about the thread handling for each of these variants, gave really helpful advice on collecting join handles in a closure on the main thread and waiting…
After many years of experience, I still sometimes stumble on how to phrase a regex pattern to get exactly what I want if it is a bit unconventional. Before I'd have to look up lists of common regex's (sed commands, etc). But I've lately been feeding in sample input lines, telling it what I want to do, and it has been really good about answering correctly (and explaining each part of the regex).
Sometimes I have to clarify "But this will also output x, on line 3, but I really want it to output y". And it gives a correction based on my clarification.