AoC-2023/src/main.rs

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pub mod input;
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pub mod error;
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pub mod days;
use days::*;
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use std::env;
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use crate::error::AdventError;
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fn main() -> Result<(), AdventError> {
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let days = vec![
(day1::one as fn() -> Result<u32, AdventError>, day1::two as fn() -> Result<u32, AdventError>),
(day2::one as fn() -> Result<u32, AdventError>, day2::two as fn() -> Result<u32, AdventError>),
(day3::one as fn() -> Result<u32, AdventError>, day3::two as fn() -> Result<u32, AdventError>),
(day4::one as fn() -> Result<u32, AdventError>, day4::two as fn() -> Result<u32, AdventError>),
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(day5::one as fn() -> Result<u32, AdventError>, day5::two as fn() -> Result<u32, AdventError>),
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(day6::one as fn() -> Result<u32, AdventError>, day6::two as fn() -> Result<u32, AdventError>),
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];
if env::args().len() != 3 {
Ok(days.into_iter().map(|(one, two)| {
let one_result = one()?;
let two_result = two()?;
Ok((one_result, two_result))
}).enumerate().map(|(index, r): (usize, Result<(u32, u32), AdventError>)| {
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match r {
Ok((res1, res2)) => println!("{}: ({}, {})", index + 1, res1, res2),
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Err(e) => println!("Error: {}", e.0)
};
}).fold((), |acc, _| { acc }))
} else {
let (one, two) = days[env::args().nth(1).ok_or(AdventError("Failed to parse day".into()))?.parse::<usize>()? - 1];
match env::args().nth(2).unwrap().parse::<usize>()? {
1 => Ok(println!("1: {}", one()?)),
2 => Ok(println!("2: {}", two()?)),
_ => return Err(AdventError("part must be either 1 or 2".into()))
}
}
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}