王老师一边讲课一边观察学生

The general code is like this, and I feel that the code using the intermediary mode is similar, so I won't introduce it much here. The code in the book has advantages, but I don't feel that there is much difference, so I no longer use the intermediary mode to write code here. State mode is an unusually excellent mode, which may be the best way to solve some requirement scenarios. Although the state mode is not a simple to clear mode (it often brings about an increase in the amount of code), once you understand the essence of the state mode, you will certainly thank it for its incomparable benefits in the future. The key to the state mode is to distinguish the internal state of things. Changes in the internal state of things often bring about changes in the behavior of things. This article describes the state mode in detail可是……他忽然轻声道：玉米，小叔要跟你说个事。Non-state enterprises:这的确不得不让人感叹，《绝代双骄》的情节安排得真是巧妙。偏偏张念祖和郑雪峰觉得自己早会游了，嫌那气囊碍事，想要解下来，跟的人当然不许了。以朝鲜时代为背景，讲述了为争夺爱情和权利，逐渐变为恶魔的后宫佳丽们之间展开凄厉的明争暗斗故事。讲述了残酷的封建制度下女性的苦难史，并以全方位地描绘提供了一幅古代韩国社会的风情画。Public interface Handler {