clap 3.0.0

A simple to use, efficient, and full-featured Command Line Argument Parser
Documentation 
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use clap::Parser;

#[derive(Parser)]
#[clap(author, version, about)]
struct Cli {
    #[clap(short, long)]
    name: Option<String>,
}

fn main() {
    let cli = Cli::parse();

    println!("name: {:?}", cli.name.as_deref());
}