Advent of Code solutions in Rust.

Common utilities are defined in src/lib.rs.

Day implementations are defined in src/bin/.

Pass the day binary to cargo run and pass the input through stdin. For example, to run day1 with the input saved in resources/day1.txt:

$ cargo run --bin day1 < resources/day1.txt

$ cargo test

To test a specific day (e.g. day1):

$ cargo test --bin day1