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This chapter is the last lecture on design patterns. It will talk about the third design pattern-behavioral pattern, with a total of 11 types: policy pattern, template method pattern, observer pattern, iterative sub-pattern, responsibility chain pattern, command pattern, memo pattern, state pattern, visitor pattern, intermediary pattern and interpreter pattern. I have been writing about design patterns for a long time. At last it's halfway through, Writing a blog post is a very time-consuming thing, Because I have to be responsible for the readers, Whether it's graphs, codes, or representations, Everyone hopes to write it as clearly as possible so that readers can understand it. I think both I and the readers hope to see high-quality blog posts come out. Starting from myself, I will stick to it and update it continuously. The continuous motivation comes from the continuous support of readers and friends. I will do my best to write every article well! I hope everyone can give opinions and suggestions continuously and jointly create a perfect blog post!由一宗命案牵扯出的金融大案，表面风光的能源公司——绿能公司，是否真的在能源领域有着核心科技呢？还是说，这一切只是为了圈钱编造的谎言？看金融警察麦子和他的搭档阿尔夫如何智斗公司总裁，将金融犯罪分子绳之以法。B3 chest X-ray examination.In reality, this flight is CA1406, which is operated by 330 or 747-8. If you have time, audience friends, it is strongly recommended to inquire about the specific date of 747 flying and experience it yourself (but there may be temporary changes in the type of flying, good luck to you ~). After all, the service deadline of 744 is approaching and the purchase quantity of 747-8i is not large. # QOTS4L等黎水跟魏铁发泄完了，他才走过来谆谆教导二人：你钱大哥说得对，光露身子是没有用的，就要这样。