Method remove_rear

code/chapter03/palindrome_checker.rs:32–38

(&mut self)

    }

    fn remove_rear(&mut self) -> Option<T> {
        if self.size() > 0 {
            Some(self.data.remove(0))
        } else {
            None
        }
    }

    fn size(&self) -> usize {
        self.data.len()