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use clap::{arg, command, value_parser, ArgAction};
fn main() {
let matches = command!() // requires `cargo` feature
.arg(arg!(eff: -f).action(ArgAction::SetTrue))
.arg(arg!(pea: -p <PEAR>).value_parser(value_parser!(String)))
.arg(
// Indicates that `slop` is only accessible after `--`.
arg!(slop: [SLOP])
.num_args(1..)
.last(true)
.value_parser(value_parser!(String)),
)
.get_matches();
// This is what will happen with `myprog -f -p=bob -- sloppy slop slop`...
// -f used: true
println!("-f used: {:?}", matches.get_flag("eff"));
// -p's value: Some("bob")
println!("-p's value: {:?}", matches.get_one::<String>("pea"));
// 'slops' values: Some(["sloppy", "slop", "slop"])
println!(
"'slops' values: {:?}",
matches
.get_many::<String>("slop")
.map(|vals| vals.collect::<Vec<_>>())
.unwrap_or_default()
);
// Continued program logic goes here...
}