Merge pull request #12 from swlody/run-current-day

Run only most recent day by default

Author: remi-dupre

Cargo.lock

@@ -45,6 +45,13 @@ pub fn args(year: u16) -> App<'static> {
                 .long("bench")
                 .about("Run criterion benchmarks"),
         )
+        .arg(
+            Arg::new("all")
+                .short('a')
+                .long("all")
+                .conflicts_with("days")
+                .about("Run all days"),
+        )
 }
 
 #[macro_export]
@@ -83,11 +90,18 @@ macro_rules! base_main {
                             .into_iter()
                             .filter(|day| days.contains(&format!("day{}", day).as_str()))
                             .collect()
-                    } else {
+                    } else if opt.is_present("all") {
                         parse!(extract_day {}; $( $tail )*)
                             .iter()
                             .map(|s| &s[3..])
                             .collect()
+                    } else {
+                        // Get most recent day, assuming the days are sorted
+                        vec![parse!(extract_day {}; $( $tail )*)
+                            .iter()
+                            .map(|s| &s[3..])
+                            .last()
+                            .expect("No day implemenations found")]
                     }
                 };