I got so severely humbled by @billylanchantin that I just copied his code with very slight changes like adding types and specs and doctests, and extracting functions for better understanding of what does what, plus have common AOC helpers in a separate module.
In my defense for stealing his code, I did stare at the code for 40 minutes and played with it in iex until I understood exactly how it’s working. And then I was finally like “gods, I would absolutely do it this way if I knew about this Elixir API!”.
But yeah, I had no idea about Enum.zip_with and Enum.zip_reduce. Lesson learned – check Elixir’s CHANGELOGs!
Here’s my final Day 1 version:
https://github.com/dimitarvp/advent-of-code-2024-elixir/blob/main/lib/day01.ex
