ref code

src/main.rs

@@ -20,14 +20,13 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let mut input: Option<String> = None;
     if let Some(input_arg) = matches.args.get("INPUT") {
-        if input_arg.vals.len() > 0 {
+        if !input_arg.vals.is_empty() {
             input = input_arg.vals[0].clone().into_string().ok();
         }
     }
 
     let input_string = match input {
-        Some(i) => i,
+        Some(i) => i, None => return Ok(()), // TODO no input
-        None => return Ok(()), // TODO no input
     };
 
     let code = QrCode::new(input_string.as_bytes()).unwrap();