advent-of-code/2022/src/main.rs

mod day1;
mod day2;
mod day3;
mod day4;
mod day5;

fn main() {
    let day = std::env::args().skip(1).next();

    let result = match day.as_ref().map(|v| v.as_ref()) {
        Some("1a") => day1::part1(),
        Some("1b") => day1::part2(),
        Some("2a") => day2::part1(),
        Some("2b") => day2::part2(),
        Some("3a") => day3::part1(),
        Some("3b") => day3::part2(),
        Some("4a") => day4::part1(),
        Some("4b") => day4::part2(),
        Some("5a") => day5::part1(),
        Some("5b") => day5::part2(),
        _ => panic!("unrecognized day"),
    };

    println!("[{}] {}", day.unwrap(), result);
}