03_01_flag_count_derive/
03_01_flag_count.rs

1use clap::Parser;
2
3#[derive(Parser)]
4#[command(version, about, long_about = None)]
5struct Cli {
6    #[arg(short, long, action = clap::ArgAction::Count)]
7    verbose: u8,
8}
9
10fn main() {
11    let cli = Cli::parse();
12
13    println!("verbose: {:?}", cli.verbose);
14}