fn main() {
    // Our Data:
    let data = vec![
        (1, "Hello".as_bytes().to_vec()),
        (2, ", ".as_bytes().to_vec()),
        (4, "world".as_bytes().to_vec()),
        (1, "!".as_bytes().to_vec()),
    ];

    // Write to file.
    // Note that one should not panic!() in real life.
    match kvds::encode_to_file("data", data) {
        Err(e) => panic!("Err: {:?}", e),
        _ => (),
    }

    // Read from file.
    let decoded_data = match kvds::decode_from_file("data") {
        Ok(d) => d,
        Err(e) => panic!("Err: {:?}", e), // Again, DO NOT PANIC!() IRL.
    };

    // Print it.  It should look like a Vec<(u8, Vec<u8>)>, same as the original `data`!
    println!("{:?}", decoded_data);
}