Sure, anecdotal evidence. Here's another anecdote:
Original article: https://osa1.net/posts/2024-10-09-oop-good.html
LLM (ChatGPT o1-preview) results: https://chatgpt.com/share/67166301-00d8-8013-9cf5-e8a980aca7...
LGTM!
I'd like to know which model is used in the article you've referenced as well as the prompt. I also suspect that 50 pages is pushing up to the limits of the context window and has an impact on the results.
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As for the article itself... Use a language like F# or OCaml and you get a functional-first language that also supports OOP!