vendor/clap-3.2.20/examples/tutorial_builder/02_app_settings.rs

   1 use clap::{arg, command, AppSettings, ArgAction};
   2
   3 fn main() {
   4     let matches = command!() // requires `cargo` feature
   5         .global_setting(AppSettings::DeriveDisplayOrder)
   6         .allow_negative_numbers(true)
   7         .arg(arg!(--two <VALUE>).action(ArgAction::Set))
   8         .arg(arg!(--one <VALUE>).action(ArgAction::Set))
   9         .get_matches();
  10
  11     println!(
  12         "two: {:?}",
  13         matches.get_one::<String>("two").expect("required")
  14     );
  15     println!(
  16         "one: {:?}",
  17         matches.get_one::<String>("one").expect("required")
  18     );
  19 }