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B) Design principles. Many people have listed seven principles, such as single duty principle, opening and closing principle, Richter substitution principle, dependence inversion principle, interface isolation principle, composite reuse principle and Dimit principle. LSP, I elevated it to one of the three cornerstones of the object-oriented paradigm; Single responsibility and interface isolation are mainly used as the principle of responsibility division in object-oriented analysis/OOA, which you can not pay much attention to at this time. Relying on the inversion principle, I throw it away as garbage, because the opening and closing principle or directly "relying on abstract type principle" already contains the essence of relying on the inversion principle, while the dross of relying on the inversion principle is inherited by IoC. Of course, the pullback, I emphasize very much. Therefore, you need to master the abstract dependency principle (OCP), one-way dependency principle (including the learning of callbacks) and the minimum dependency principle (composite reuse principle, Dimit rule).吸血鬼日记第六季已经完结，乔和她肚子里的孩子被凯杀死了，阿拉里克悲痛欲绝。伊芙为救泰勒甘愿被杀，泰勒再次成为狼人，凯被达蒙杀死，斯特凡向卡罗琳表白，艾琳娜陷入漫长的沉睡，达蒙表示会一直等她醒来。异教徒重现天日，与莉莉重逢。在第七季中，每个人都捡起来自己的生活……。CW电视台已经宣布续订吸血鬼日记第七季。31Jared Mauch of the Open DNS Parser Project told Threat Post that the botnets involved in the Spamhaus attack used more than 30,000 unique DNS parsers. "If a wider attack is carried out, the combined power of these parsers may be used by criminals to paralyze most of the systems of this global network. "2016年 ルパン三世 イタリアン・ゲーム 意大利游戏