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This is the basis of the opening and closing principle, and the specific content: interface-oriented programming, relying on abstraction rather than concreteness. When a specific class is used when writing code, it does not interact with the specific class, but interacts with the upper interface of the specific class.与世隔绝的海岛小渔村，忠厚善良的哑巴男孩阿水（古天乐饰）自小就没了父母，开了一个家庭旅馆兼杂货铺。阿水每天傍晚都会在面向大海的平台上打沙包，坐在木架边吹口琴。海风拂过，淡淡的生活节奏之于阿水简单而又幸福。假小子一般的女孩小四喜跟阿水很要好，几乎成了金水的翻译。然而这一切的平静生活，被一个从香港来到这个小岛度假的姑娘雯雯（蒙嘉慧饰）打破了。美丽温柔的雯雯住进了阿水家开的度假木屋里，渐渐地，她和阿水以及小四喜成为了好朋友，度过了非常愉快的几天。当雯雯就要离开的时候，阿水已经深深地爱上了她，可依旧没有勇气表白。1. If the platform website or APP can be opened normally, you can download the above information.Some of the resources of this site come from the Internet. For the purpose of transmitting more information, the copyright of this site reprints belongs to the original author or the source organization. If the reprinted manuscript involves copyright issues, please contact us.讲述因父母调职而转学的里樱，在新的学校遇到了5个特别的男子？喜欢布丁狗的长谷川康太，喜欢美乐蒂的水野祐，超爱Hello Kitty的吉野俊介，喜欢Cinnamoroll的源诚一郎和喜欢双子星的西宫谅，而且他们竟然是三丽鸥的狂热粉丝！？Policy pattern refers to defining a series of algorithms and encapsulating them. However, policy pattern not only encapsulates algorithms, but also encapsulates a series of business rules. As long as these business rules have the same objectives, we can use policy pattern to encapsulate them.