// str is string slice type: &[]
fn borrow_to_a_friend(str: &str) {
    borrow_to_a_friends_friend(&str.as_bytes());
}

fn borrow_to_a_friends_friend(_buf: &[u8]){}

fn main() {
    // Move temporary to book_title
    let book_title = String::from("Alice in Wonderland");

    // Borrow a string slice reference here
    borrow_to_a_friend(&book_title);
}