Advent of Code 2024 in Elixir

If you've never heard of Advent of Code, you're missing out. Check it out now at adventofcode.com!

I mostly do AoC puzzles for fun, generally coding in Python or Rust, but I've also found that it's a great way to get some experience with other programming languages, such as Elixir, Haskell, or Julia.

This repository contains all my solutions to the AoC 2024 puzzles using Elixir.

As I'm still learning Elixir, the code may not always be as simple or idiomatic as it could be. If you have suggestions for things I could improve, please don't hesitate to file an issue or submit a PR. Thanks!

Usage

Make sure you have Elixir and Git installed, then open a terminal and run:

git clone https://github.com/ageron/aoc2024-elixir
cd aoc2024-elixir
mix aoc2024.run

You can specify days to run if you want, for example this will run days 2, 4, and 6:

mix aoc2024.run 2 4 6

Getting the data

I've also included a little get_data.py utility to automatically download the data of the day, at the right time (you'll get a countdown if you're early). I was too lazy to code it in Elixir, but perhaps I'll port it one day. To use it, just type the following command in a terminal, replacing {day} with the day you want:

cd /path/to/this/repository
python get_data.py 2024 {day}

The script requires the requests and pytz libraries, which you can install like this:

python -m pip install --user requests pytz

The first time you run get_data.py, you will be asked to login to AoC in your browser, find your session cookie, and save it into a .session file in the current directory.

Have fun!