Advent of Code 2024

Here be some probably quite awful Rust code for (some of) AoC 2024.

This code uses the standard Rust toolchain, as of writing I was using Rust 1.83.0, using the Rust 2021 standard (though I don't use anything that'll break in Rust 2024... I think!).

Puzzle inputs are not included.¹ Create a data directory and add your inputs (without trailing newlines because I'm too lazy to remove them in code!) with the filename day[nn]a.txt, replacing [nn] with the two digit day number (so, the input for day 1 is day01a.txt). In the very unlikely event that a different input is needed for the second part of a day, that will be suffixed with b rather than a.

To run the code in dev mode, run via cargo, including the day numbers you want to run:

cargo run -- <day numbers>

# for example
cargo run -- 1
cargo run -- 1 2

or, for all days

cargo run -- --all

Or, compile the binary using cargo:

cargo build -r

then run the binary (careful with working directories, you'll need data to be there!):

target/debug/aoc2024 <day numbers>

Tests are included in the source files, as per Rust convention. Use cargo test to run the tests. File IO is not tested, so is safe to run without input files.

Footnotes

1. See https://adventofcode.com/2024/about, specifically "Can I copy/redistribute part of Advent of Code?", which says:

   "If you're posting a code repository somewhere, please don't include parts of Advent of Code like the puzzle text or your inputs." ↩