Make stuff more Rust-y

rust/src/day_08.rs

@@ -20,6 +20,7 @@ fn test_decode() {
     assert_eq!(1, decode(r#""\xfa""#).chars().count());
 }
 
+#[allow(dead_code)]
 fn decode(string: &str) -> String {
     let mut out = "".to_owned();
 

rust/src/day_09.rs

@@ -59,7 +59,7 @@ impl<'a> Day09<'a> {
 
     fn routes(&self) -> Vec<Route> {
         let mut locations = self.locations.iter()
-            .map(|l| l.clone())
+            .cloned()
             .collect::<Vec<Location>>();
         let heap = Heap::new(&mut locations);
         heap.map(|p| self.route(p)).collect()