clap/examples/tutorial_derive/03_02_option.rs

14 lines
241 B
Rust

use clap::Parser;
#[derive(Parser)]
#[command(version, about, long_about = None)]
struct Cli {
#[arg(short, long)]
name: Option<String>,
}
fn main() {
let cli = Cli::parse();
println!("name: {:?}", cli.name.as_deref());
}