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Carnap – A formal logic framework for Haskell

85 points9 hourscarnap.io
cartucho16 hours ago

For something similar, but in Python, I made this a while ago:

https://logics.readthedocs.io/en/latest/

GUI here:

https://taut-logic.com/

Cheyana2 hours ago

Oh I know what I'm doing on my lunch break today.

keiferski8 hours ago

If you were wondering, the name comes from a famous philosopher and logician:

https://en.wikipedia.org/wiki/Rudolf_Carnap

Pet_Ant2 hours ago

Thanks... you just ruined it.

I was so happy that finally that splendid slumber during transportation was finally getting the recognition it so richly deserves.

;)

keiferski56 minutes ago

Ha, I’ve been familiar with Carnap for probably a decade and it took your comment for me to realize his name is Car Nap.

netdevphoenix8 hours ago

An Open Tower project. Copyright 2015-2024.

Doesn't look like it is been updated in a while. And the GitHub repos last commits are even older. Dead project?

LandR7 hours ago

Or maybe it's finished ?

mark_l_watson7 hours ago

+1

It seems to of had the web app portion updated a year ago. And as you say, the application itself looks ‘done.’

I have frequently used Common Lisp over the last 40 years, and I hear comments about libraries being old and not updated in many years: so what! Quality code that performs a specific function sometimes is ‘done.’

I am a novice Haskell programmer but I enjoy the language and it is very cool to have the Carnap github repo with a book manuscript, backend and front end code to look over.

benrutter7 hours ago

I think that's probably unlikely given the long list of universities using it[0].

It's an educational tool for formal propositional logic which hasn't really changed much on 100 years, so probably not a lot of updates are required unless there are big new updates to Haskell itself.

[0] https://carnap.io/about

imovie42 hours ago

the list is also incomplete! I used carnap for intro logic and my college isn't there

ravenical1 hour ago

My university's course (how I found out about it) isn't there either - seems like it's mostly US-focused

gleachkr4 hours ago

Hey, Carnap creator here. Definitely not dead (still actively used by plenty of universities), but pretty stable these days.

cubefox6 hours ago

I don't like the trend of naming software projects after real people. It makes web search harder both for people who try to find the person and for people who try to find the project.

amelius6 hours ago

I don't like the trend of naming computer hardware after fruit.

ffuxlpff3 hours ago

I don't like naming things after other things. Names should be self explanatory or random codes.

Cheyana2 hours ago

Everything should just be in Zalgo text.

throwaway4x48 hours ago

Past experience in logical frameworks tend to specify documentclass: script, letter, report, etc.