fix: fix clippy lint

Author: fspoettel

src/helpers.rs

@@ -1,2 +1,4 @@
-// Use this file if you want to extract sections of your solutions.
-// Example import: `use aoc::helpers::example_fn;`
+/*
+ * Use this file if you want to extract helpers from your solutions.
+ * Example import from this file: `use aoc::helpers::example_fn;`
+ */

src/lib.rs

@@ -1,5 +1,7 @@
-// This file contains template helpers.
-// Prefer `./helpers.rs` if you want to extract code from your solutions.
+/*
+ * This file contains template helpers.
+ * Prefer `./helpers.rs` if you want to extract code from your solutions.
+ */
 use std::env;
 use std::fs;
 
@@ -26,7 +28,7 @@ macro_rules! solve {
                         "{} {}(elapsed: {:.2?}){}",
                         result, ANSI_ITALIC, elapsed, ANSI_RESET
                     );
-                },
+                }
                 None => {
                     println!("not solved.")
                 }

src/main.rs

@@ -1,3 +1,7 @@
+/*
+ * This file contains template code.
+ * Unless you want to change how solutions are invoked, this file does not need to be edited.
+ */
 use aoc::{ANSI_BOLD, ANSI_ITALIC, ANSI_RESET};
 use std::process::Command;
 
@@ -18,7 +22,14 @@ fn main() {
             let output = String::from_utf8(cmd.stdout).unwrap();
             let is_empty = output.is_empty();
 
-            println!("{}", if is_empty { "Not solved." } else { &output.trim() });
+            println!(
+                "{}",
+                if is_empty {
+                    "Not solved."
+                } else {
+                    output.trim()
+                }
+            );
 
             if is_empty {
                 0_f64