[rustc.git] / vendor / clap / examples / tutorial_builder / 04_02_parse.rs

// Note: this requires the `cargo` feature

use clap::{arg, command, value_parser};

fn main() {
    let matches = command!()
        .arg(
            arg!(<PORT>)
                .help("Network port to use")
                .value_parser(value_parser!(u16).range(1..)),
        )
        .get_matches();

    // Note, it's safe to call unwrap() because the arg is required
    let port: u16 = *matches
        .get_one::<u16>("PORT")
        .expect("'PORT' is required and parsing will fail if its missing");
    println!("PORT = {}", port);
}
Commit	Line	Data
923072b8 FG	1	// Note: this requires the `cargo` feature
	2
	3	use clap::{arg, command, value_parser};
04454e1e FG	4
	5	fn main() {
	6	let matches = command!()
	7	.arg(
	8	arg!(<PORT>)
	9	.help("Network port to use")
923072b8	10	.value_parser(value_parser!(u16).range(1..)),
04454e1e FG	11	)
	12	.get_matches();
	13
	14	// Note, it's safe to call unwrap() because the arg is required
923072b8 FG	15	let port: u16 = *matches
923072b8 FG	16	.get_one::<u16>("PORT")
04454e1e FG	17	.expect("'PORT' is required and parsing will fail if its missing");
	18	println!("PORT = {}", port);
	19	}