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#![feature(
iterator_try_collect,
iter_map_windows,
iter_array_chunks,
array_windows,
iter_intersperse,
impl_trait_in_assoc_type,
macro_metavar_expr,
slice_group_by
)]
pub mod day_01;
pub mod day_02;
pub mod day_03;
pub mod day_04;
pub mod day_05;
pub mod day_06;
pub mod day_07;
pub mod day_08;
pub mod day_09;
pub mod day_10;
pub mod day_11;
pub mod day_12;
pub mod day_13;
pub mod day_14;
pub mod day_15;
pub mod day_16;
pub mod day_17;
pub mod day_18;
pub mod printer;
pub use printer::Printer;
pub type Result<T, E = Box<dyn std::error::Error>> = std::result::Result<T, E>;
#[macro_export]
macro_rules! get_days {
// `()` indicates that the macro takes no argument.
($($day:path),*) => {
pub fn get_days() -> [(&'static str, [Box<dyn Fn(&str) -> anyhow::Result<usize>>; 2]); ${count(day)}] {
[
$((<$day>::INPUT,
[
Box::new(<$day>::part_1),
Box::new(<$day>::part_2),
])
,)*
]
}
};
}
get_days!(
day_01::Day01,
day_02::Day02,
day_03::Day03,
day_04::Day04,
day_05::Day05,
day_06::Day06,
day_07::Day07,
day_08::Day08,
day_09::Day09,
day_10::Day10,
day_11::Day11,
day_12::Day12,
day_13::Day13,
day_14::Day14,
day_15::Day15,
day_16::Day16,
day_17::Day17,
day_18::Day18
);
pub trait Problem {
const DAY: u8;
const INPUT: &'static str;
}
pub trait Solution: Problem {
type Answer1: std::fmt::Display + Default;
type Answer2: std::fmt::Display + Default;
fn part_1(input: &str) -> anyhow::Result<Self::Answer1>;
fn part_2(input: &str) -> anyhow::Result<Self::Answer2>;
fn solve() -> anyhow::Result<()> {
print!("Day {}.1", Self::DAY);
let timer = std::time::SystemTime::now();
let answer = Self::part_1(Self::INPUT)?;
let duration = timer.elapsed()?;
println!(" ({:.2}ms)", duration.as_micros() as f64 / 100f64);
println!("{answer}\n");
print!("Day {}.2", Self::DAY);
let timer = std::time::SystemTime::now();
let answer = Self::part_2(Self::INPUT)?;
let duration = timer.elapsed()?;
println!(" ({:.2}ms)", duration.as_micros() as f64 / 100f64);
println!("{answer}\n");
Ok(())
}
}
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