Method pop

publication/code/chapter04/lvec.rs:100–106

(&mut self)

    }

    fn pop(&mut self) -> Option<T> {
        if self.size < 1 {
            return None;
        } else {
            self.remove(self.size - 1)
        }
    }

    fn remove(&mut self, index: usize) -> Option<T> {
        if index >= self.size { return None; }