From 070c4dbf574c4e9b2f30b3365a2be93352375c6a Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Sat, 18 Apr 2020 23:42:59 +0800
Subject: [PATCH] ref code

---
 src/main.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 1a196cf..ac1ffa4 100644
--- a/src/main.rs
+++ b/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,
-        None => return Ok(()), // TODO no input
+        Some(i) => i, None => return Ok(()), // TODO no input
     };
 
     let code = QrCode::new(input_string.as_bytes()).unwrap();