vendor/clap/examples/tutorial_builder/03_02_option.rs

   1 // Note: this requires the `cargo` feature
   2
   3 use clap::{arg, command};
   4
   5 fn main() {
   6     let matches = command!()
   7         .arg(arg!(-n --name <NAME>).required(false))
   8         .get_matches();
   9
  10     println!("name: {:?}", matches.get_one::<String>("name"));
  11 }