#[macro_use] extern crate clap; use clap::App; fn main() { // You can have clap pull the application version directly from your Cargo.toml starting with // clap v0.4.14 on crates.io (or master#a81f915 on github). Using Rust's env! macro like this: // // let version = format!("{}.{}.{}{}", // env!("CARGO_PKG_VERSION_MAJOR"), // env!("CARGO_PKG_VERSION_MINOR"), // env!("CARGO_PKG_VERSION_PATCH"), // option_env!("CARGO_PKG_VERSION_PRE").unwrap_or("")); // // Starting from v0.6.6 on crates.io you can also use the crate_version!() macro instead of // manually using the env!() macros. Under the hood, the macro uses this exact method to get // the version. // // Thanks to https://github.com/jhelwig for pointing this out App::new("myapp") .about("does awesome things") // use crate_version! to pull the version number .version(crate_version!()) .get_matches(); // running this app with the -V or --version will display whatever version is in your // Cargo.toml, the default being: myapp 0.0.1 }