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二战结束后，数百位纳粹分子逃至西班牙躲藏。到了1960年代，某位大屠杀幸存者加入特务行列，要向这些纳粹讨回公道。Soon I saw Li Jianzhong's C # Object-Oriented Design Pattern Lecture on MSDN's Webcast. A very good series of lectures gave me a new understanding of design patterns. I realized that learning design patterns, specifically learning object-oriented design patterns, should start with learning object-oriented. "The principle of object-oriented is like understanding the rules of chess, and the design pattern is equivalent to a mess. I don't know what the rules look at." Since I have been doing ASP.NET development for the previous year, although I have been writing classes, learning Duwamish to make hierarchical architecture, typed DataSet and custom entity classes, it seems that I haven't used interfaces much in the past year, and I seldom use any polymorphism. In fact, the understanding of object-oriented programming is still very vague.StanceNBA socks are divided into the following types:? ? ? Yum install https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-selinux-17. 03.0. Ce-1. El7. Centos.noarch.rpmPrivate Vector < Observer > vector = new Vector < Observer > ();Other methods to modify rules: delete rules by number first, and then add a rule at the original number position.