Thank you for the instructor's detailed explanation. Among all the lectures, the container one-shot lecture is the most memorable. Since you emphasized the importance of review, I'm organizing it myself, but organizing it isn't easy. ㅎㅎ;; Looking at the materials you provided, I can feel the sincerity of the lecture. The downside is that there is no next lecture yet. I will review it until the next lecture comes out. I learned well.