Feat: simple struct usage.

src/main.rs

@@ -7,5 +7,10 @@ fn main() {
     let pattern = std::env::args().nth(1).expect("no pattern given.");
     let path = std::env::args().nth(2).expect("no path given.");
 
-    println!("pattern: {:?}, path: {:?}", pattern, path)
+    let args = Cli {
+        pattern,
+        path: std::path::PathBuf::from(path),
+    };
+
+    println!("pattern: {:?}, path: {:?}", args.pattern, args.path)
 }