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Home OperatorThe fundamental reason for using design patterns is to adapt to changes, improve code reuse rate, and make software more maintainable and scalable. In addition, the following principles should be followed when designing: single responsibility principle, open and closed principle, Richter substitution principle, dependency inversion principle, interface isolation principle, composite reuse principle and Dimit principle. Each design principle is described below.The distance between components and printed board edge and V slot is ≥ 3mm.他们兄妹之间，比对爹娘的感情更深，真正的心意相通。　　官方于今日举行的“ Aniplex Online Fest 2021”活动中，宣布《刀剑神域剧场版 进击篇 无星之夜的咏叹调》将于 10 月 30 日在日本上映的消息，并且同步公开了电影的正式视觉图。88648326When his father came to play, he was angry with his father: "why did you go there then? Why don't you start a business in the sea?" If you had gone to sea in those days, would my family be like this? "A few days ago, I met him in the elevator, and he sighed," Now the class is solidified, and it is difficult for poor families to have a son. "It is true that it is difficult for poor families to have a son.