clap/examples/02_Apps.rs

extern crate clap;

use clap::{App};

fn main() {

    // Apps describe the top level application
    //
    // You create an App and set various options on that App using the "builder pattern"
    //
    // The options (version(), author(), about()) aren't mandatory, but recommended. There is
    // another option, usage(), which is an exception to the rule. This should only be used when
    // the default usage string automatically generated by clap doesn't suffice.
    //
    // You also set all the valid arguments your App should accept via the arg() and args() (a
    // well as subcommands via the subcommand() and subcommands() methods) which will be covered
    // later.
    //
    // Once all options have been set, call .get_matches() in order to find all valid command line
    // arguments that supplied by the user at runtime. The name given to new() will be displayed
    // when the version or help flags are used.
    let matches = App::new("MyApp")
                        .version("1.0")
                        .author("Kevin K. <kbknapp@gmail.com>")
                        .about("Does awesome things")
                        .get_matches();
     
    // Continued program logic goes here...
}