Library for demonstration

Usage

    // Cargo.toml

    [dependencies]
    hello_lib = "0.1.6"

    // main.rs

    use hello_lib::hello;

    fn main() {
        println!("{}", hello("Rachel"));
        println!("{}", hello(31));
        println!("{}", hello(3.14));
        println!("{}", hello(true));
        println!("{}", hello('G'));
    }