#[must_use]
pub fn as_u64(number: u8) -> u64 {
    u64::from(number)
}

fn main() {
    let mut nums = vec![1, 2, 3];
    nums.clear();

    println!("Hello, world! {nums:?}");
}

#[cfg(test)]
mod test {
    #[test]
    fn trivial() {
        assert_eq!(1, 1);
    }
}