empty show

src/main.rs

@@ -142,9 +142,13 @@ impl MPS {
 
     fn list(&mut self) -> io:: Result<()> {
         self.login()?;
-        let st = self.storage.as_ref().unwrap();
-        for id in st.ids() {
-            println!("{}", id);
+        let ids = self.storage.as_ref().unwrap().ids();
+        if ids.len() == 0 {
+            println!("No items");
+        } else {
+            for id in ids {
+                println!("{}", id);
+            }
         }
         Ok(())
     }