2015: day01: finish

aoc2015/src/main.rs

@@ -0,0 +1,29 @@
+use std::env;
+
+use aoc2015::day01;
+
+use aoc2015::Result;
+
+fn main() -> Result<()> {
+    let days: &[fn() -> Result<()>] = &[day01::run];
+
+    let mut args = env::args();
+    args.next();
+
+    match args.next() {
+        Some(arg) => {
+            let day: usize = arg.parse().expect("Please provide a day number");
+            days[day - 1]().expect("error running day specified");
+        }
+        None => {
+            for (i, day) in days.iter().enumerate() {
+                let i = i + 1;
+                println!("day{}: ", i);
+                day().unwrap_or_else(|e| panic!("error running day {}: {}", i, e));
+                println!();
+            }
+        }
+    }
+
+    Ok(())
+}