Advent Of Code 2024

Workspaces

Adding a new workspace

cargo new --lib day-00 at the root of the repo and cargo will scaffold a new library.
Add a new bin folder inside of the src folder and put the part1.rs, part2.rs and input.txt files in that.

Example Structure

fn main() {
    let input = include_str!("./input.txt");
    let output = part_1(input);
    dbg!(output);
}

fn part_1(input: &str) -> i32 {
  todo!()
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn sample() {
        let result = part_1(
            "",
        );
        assert_eq!(result, 0);
    }
}

Running a day

Make sure to cd into the day you want to run.

Testing sample data

Run cargo test to execute all of the tests in that workspace.
cargo test --bin part1 will run just a certain part's tests.
Adding the -- --nocapture flags on tests will allow print and debug statements into the terminal.
cargo test --bin part1 -- --nocapture
cargo test --bin part2 -- --nocapture

Running real input data

Run cargo run --bin part1 to run a specific bin. There is no "run all" command because we are not compiling binaries.
cargo run --bin part1
cargo run --bin part2