Small changes.

2016/01/src/main.rs

@@ -19,7 +19,7 @@ fn main() {
 
 fn follow_instructions(input: &str) -> (Option<(i32, i32)>, Option<(i32, i32)>) {
     let instructions = input
-        .split(",")
+        .split(',')
         .map(|x| x.trim())
         .map(|x| x.split_at(1))
         .map(|(x, y)| (x, y.parse::<i32>().unwrap()));
@@ -36,7 +36,7 @@ fn follow_instructions(input: &str) -> (Option<(i32, i32)>, Option<(i32, i32)>)
         delta = match direction {
             "R" => (delta.1, delta.0 * -1),
             "L" => (delta.1 * -1, delta.0),
-            _   => delta,
+            _   => unreachable!(),
         };
 
         for _ in 0..steps {