2023: day01: part 1

Cargo.lock

@@ -115,6 +115,15 @@ dependencies = [
  "criterion 0.4.0",
 ]
 
+[[package]]
+name = "aoc2023"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "aoc",
+ "criterion 0.4.0",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"

Cargo.toml

@@ -1,7 +1,9 @@
 [workspace]
 members = ["aoc20*", "aoc20*/aoc20*_bench"]
 
-default-members = ["aoc2022"]
+default-members = ["aoc2023"]
+
+resolver = "2"
 
 [profile.release]
 debug = true

aoc2023/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "aoc2023"
+version = "0.1.0"
+authors = ["Antoine Martin <antoine@alarsyo.net>"]
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+aoc = { path = "../aoc" }
+anyhow = "1.0"
+
+[dev-dependencies]
+criterion = { version = "0.4", default-features = false, features = [ "rayon" ] }
+
+[lib]
+path = "src/lib.rs"
+
+[[bin]]
+name = "aoc2023"
+path = "src/main.rs"

aoc2023/input/day01_provided.txt

@@ -0,0 +1,4 @@
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet

aoc2023/src/day01.rs

@@ -0,0 +1,50 @@
+use std::fmt::Write;
+
+use anyhow::Result;
+
+const INPUT: &str = include_str!("../input/day01.txt");
+
+pub fn run() -> Result<String> {
+    let mut res = String::with_capacity(128);
+
+    writeln!(res, "part 1: {}", part1(INPUT)?)?;
+    writeln!(res, "part 2: {}", part2(INPUT)?)?;
+
+    Ok(res)
+}
+
+fn part1(input: &str) -> Result<u64> {
+    let digit_list = input
+        .lines()
+        .map(|s| s.chars().filter(char::is_ascii_digit).collect::<String>());
+
+    Ok(digit_list
+        .map(|digits| {
+            let first = digits.chars().next().unwrap().to_digit(10).unwrap() as u64;
+            let last = digits.chars().last().unwrap().to_digit(10).unwrap() as u64;
+
+            first * 10 + last
+        })
+        .sum())
+}
+
+fn part2(input: &str) -> Result<u64> {
+    todo!()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    const PROVIDED: &str = include_str!("../input/day01_provided.txt");
+
+    #[test]
+    fn part1_provided() {
+        assert_eq!(part1(PROVIDED).unwrap(), 142);
+    }
+
+    #[test]
+    fn part1_real() {
+        assert_eq!(part1(INPUT).unwrap(), 54697);
+    }
+}

aoc2023/src/lib.rs

@@ -0,0 +1 @@
+pub mod day01;

aoc2023/src/main.rs

@@ -0,0 +1,11 @@
+use anyhow::Result;
+
+use aoc::DayFunc;
+
+use aoc2023::day01;
+
+fn main() -> Result<()> {
+    let days: &[DayFunc] = &[day01::run];
+
+    aoc::run(days)
+}