easy_arg 0.2.6

EasyArg read variables from command line arguments/system envrioment/.env files
Documentation 
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use easy_arg::EasyArg;

fn main() {
    let mut arg = EasyArg::new();

    let valid = arg.get_string("valid");
    println!(":: {}", valid);

    let sec = arg.get_section("servers").unwrap();
    let name = sec.get_string("NAME");
    println!("servers.name {}", name);

    arg.use_section("servers");
    let server_home = arg.get_string("SERVER_HOME");
    println!("{:?}", server_home);

    arg.use_sub_section("first_server");
    let a_server = arg.get_string("A");
    println!("A: {}", a_server);

    let third_b = arg.get_sub_section("servers", "third-server").unwrap().get_string("B");
    println!("B {}", third_b);
}