use aoc crate for common stuff

aoc2015/Cargo.toml

@@ -7,3 +7,5 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+aoc = { path = "../aoc" }

aoc2015/src/day01.rs

@@ -1,5 +1,5 @@
-use super::err;
-use super::Result;
+use aoc::err;
+use aoc::Result;
 
 const INPUT: &str = include_str!("../input/day01.txt");
 

aoc2015/src/lib.rs

@@ -1,8 +1 @@
 pub mod day01;
-
-pub type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
-
-#[macro_export]
-macro_rules! err {
-    ($($string:expr),+) => (Box::<dyn std::error::Error>::from(format!($($string),+)))
-}

aoc2015/src/main.rs

@@ -1,8 +1,8 @@
 use std::env;
 
-use aoc2015::day01;
+use aoc::Result;
 
-use aoc2015::Result;
+use aoc2015::day01;
 
 fn main() -> Result<()> {
     let days: &[fn() -> Result<()>] = &[day01::run];