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use clap::Parser;
#[derive(Parser)] // requires `derive` feature
#[command(author, version, about, long_about = None)]
struct Cli {
#[arg(short = 'f')]
eff: bool,
#[arg(short = 'p', value_name = "PEAR")]
pea: Option<String>,
#[arg(last = true)]
slop: Vec<String>,
}
fn main() {
let args = Cli::parse();
// This is what will happen with `myprog -f -p=bob -- sloppy slop slop`...
println!("-f used: {:?}", args.eff); // -f used: true
println!("-p's value: {:?}", args.pea); // -p's value: Some("bob")
println!("'slops' values: {:?}", args.slop); // 'slops' values: Some(["sloppy", "slop", "slop"])
// Continued program logic goes here...
}