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For interface programming, a lot of changes that may occur in the system in the future can be isolated. Why? If the code is written for an interface, he can implement the interface with any new class through polymorphism. However, when the code uses a large number of specific classes, once new specific classes are added, the code must be changed. Violating the opening and closing principle.伊藤源太郎（吉田钢太郎）在东京的一所房子里，把妻子的情绪化了？和千鹤（MUGUMI）一起生活。三个女儿应该各自出了老家，过着很好的生活。长女由香（木南晴夏）单身，工作顺利，但情绪高涨？不伦气质。次女里香（佐久间由衣）和高学历的男人结婚后住在大阪，但离婚在即。三女美香（武田玲奈饰）也开始单身、梦想着一个人生活的瞬间，她与想要成为漫画家的男人陷入了半同居状态。源太郎非常担心没有眼光看男人的女儿们，完全无视女儿们的喜好，深夜突然把喜欢的男性（其实是由香的前男友）带到自己家，单方面地介绍给女儿们，是生活在昭和时代的大叔。Copyright belongs to the author. For commercial reprinting, please contact the author for authorization, and for non-commercial reprinting, please indicate the source.Belgium: 30,000Public interface Mediator {Having the ability to promote the achievement of clinical diagnosis and treatment decisions;黄斌上前拉着杨长帆苦口婆心道，他舅舅是巡抚你知道的吧？哪个巡抚。