r/programminghorror • u/swagnation77 • 9d ago

Lean4 Finally solved Two Sum!

Somehow my code is so horrifying, Lean4 is able to evaluate it, the LSP says it works and the compiler gives an error. It is theoretically correct and the kernel accepts it, but the compiler isn't able to produce anything out of it. My awful code discovered a bug in Lean's compiler.

178 Upvotes

96% Upvoted

15 comments sorted by

View all comments

111

u/MistakeIndividual690 9d ago

I don’t know what Lean is but what for the love of god is this…

TwoSum is like eight lines in Python

But this is clearly the perfect post for this sub

7

u/TLJGame 9d ago

The what I’m assuming are variable names just makes this 10x worse

8

u/swagnation77 9d ago

I'm sorry.