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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).本片改编自丹佛·摩尔与朗·霍尔合着的纪实小说。 
　　这是一则真实故事，生活于上流社会，事业有成的国际艺术画商朗·霍尔，某天听到妻子叙说她神奇的梦，这个梦将开启他与世界上另一个角落的男人，建立友谊并陪伴他度过人生最伤痛的时刻。Compared with the one just now俞大猷一切话都说到位了，就此驾马再度杀入敌军。30. It is suggested that the company organize some middle-level managers to expand their training in the next step, change their ideas, develop their ideas and improve their management ability. (urgent)大理寺卿张杨因为玉米的事，羞愧病倒。NBC剧集《我们这一天》宣布一次性续订2、3季，这部Dan Fogelman打造的大热剧是这个秋季档收视人数第二的广播网剧情剧。新续订的两季还是每季18集。