Show HN: Vibe Prolog

github.com

43 points by nl 3 days ago

Like a lot of people I got the $250 Claude Code credit and didn't use it up.

I decided to try to use it up over the weekend using (mostly) my phone and vibe coded a Prolog interpreter.

Now I'm seeing how far I can push it.

andai 17 hours ago

What are the odds :) I made this two weeks ago, also with Claude.

This one's a straight port, paip-python's[0] Prolog interpreter. (Itself based on Norvig's Paradigms of Artificial Intelligence Programming book, originally in Lisp.)[1]

https://github.com/a-n-d-a-i/prolog.js

It was in the web ui, so I expected it to give me a code block, but it spun up a vm, set up a npm project, generated tests... ran them. I was quite surprised.

Your version is the opposite of mine, in a very good way. Your one is mostly tests! My version's tests are... well, you'll see ;)

Both are surprisingly short. 700-ish for mine, ~1200-ish for yours (as far as the actual interpreter goes), right?

That seems like a lot of bang per buck for something as powerful as a Prolog interpreter! I don't know very much about Prolog though, so maybe there's a lot of crucial parts missing here.

At any rate the original is a teaching device, and the book[1] goes into some length on the limitations of Prolog, both this version and in general.

[0] Original source in Python: https://github.com/dhconnelly/paip-python

[1] Original original source in Lisp: https://norvig.github.io/paip-lisp/#/chapter11

forgotpwd16 3 days ago

If the project is about testing Claude's capabilities, the prompts will be more interesting to have.

  • nl 3 days ago

    It's not like it's a single shot generation or anything.

    • AdieuToLogic 17 hours ago

      >> If the project is about testing Claude's capabilities, the prompts will be more interesting to have.

      > It's not like it's a single shot generation or anything.

      Since you've submitted a "Show HN: Vibe Prolog" and shared in the repo:

        I was working on something else and as a side effect 
  accidently vibe coded a prolog interpretor on my phone over 
  the weekend.
      The GP's observation of the prompts being highly relevant is substantiated. Arguably even more so than the Python code committed.

      Especially since there have been 82 commits in the span of 3 days.

      EDIT:

      And I am really interested in how you "vibe coded" the commit[0] which made this singular change:

         - uv run pytest tests/ttest_additional_builtins.py -v
   + uv run pytest tests/test_additional_builtins.py -v
      0 - https://github.com/nlothian/Vibe-Prolog/commit/0bf4beba70dea...
      • johnisgood 4 hours ago

        I do not think that [0] was vibe coded. Vibe coding something does not mean that everything is vibe coded, or at least I would have never expected it to be the case.

tmaly 3 days ago

Have you considered asking for a version in assembly?

  • nl 3 days ago

    Not really. Do you mean targetting assembly output or written in assembly?