[rustc.git] / vendor / clap-4.3.10 / examples / tutorial_builder / 04_02_parse.rs

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

fn main() {
    let matches = command!() // requires `cargo` feature
        .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
add651ee FG	1	use clap::{arg, command, value_parser};
	2
	3	fn main() {
	4	let matches = command!() // requires `cargo` feature
	5	.arg(
	6	arg!(<PORT>)
	7	.help("Network port to use")
	8	.value_parser(value_parser!(u16).range(1..)),
	9	)
	10	.get_matches();
	11
	12	// Note, it's safe to call unwrap() because the arg is required
	13	let port: u16 = *matches
	14	.get_one::<u16>("PORT")
	15	.expect("'PORT' is required and parsing will fail if its missing");
	16	println!("PORT = {port}");
	17	}