AOC quick'n dirty macro set

Those are implemented using quick'n dirty procedural macros and libraries.

Running the program

Use cargo run --release -- [OPTIONS].

Options are:

• --day N (or -d N): run day N instead of the current day of month
• --all (or -a): run all days
• --input FILE (or -i FILE): use a specific input file instead of input/dayN.txt
• --timing (or -t): include timing information

Functions

Add a module for every day in src/lib.rs. Modules must contain functions such as (here src/day1.rs):

#[aoc(day1, part1)]
fn part1(input: &[u32]) -> usize {
    input.windows(2).filter(|v| v[1] > v[0]).count()
}

#[aoc(day1, part2)]
fn part2(input: &[u32]) -> usize {
    input.windows(4).filter(|v| v[3] > v[0]).count()
}

Alternate versions are also supported:

#[aoc(day1, part2, alternate_version)]
fn part2_alternate_version(input: &[u32]) -> usize {
    use itertools::Itertools;
    part1(
        &input
            .iter()
            .tuple_windows()
            .map(|(a, b, c)| a + b + c)
            .collect::<Vec<_>>(),
    )
}

Arguments

Functions arguments can be:

• nothing
• &str: the content of the input file;
• &[u8]: the content of the input file;
• &[T] where T: FromStr: the content of each line of the input file parsed through FromStr::from_str().

Return value

The return value must implement Display and can be wrapped in a Result (the string Result< is looked up to detect this).