//! How to derive the author, description, and version from Cargo.toml use clap::Clap; #[derive(Clap, Debug)] #[clap(author, about, version)] // ^^^^^^ <- derive author from Cargo.toml // ^^^^^ <- derive description from Cargo.toml // ^^^^^^^ <- derive version from Cargo.toml struct Opt {} fn main() { let opt = Opt::parse(); println!("{:?}", opt); }