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话语之中已然多了几分欲盖弥彰的意思，其他人倒为留意，张良却听得清清楚楚，笑而不语。Bad reviews, the update is too slow, and it broke before entering the state."Code Review Specification" documentation: Records the standards that code should follow.林白替陈启倒上一杯啤酒。…After understanding the history and classification of design patterns, how should we learn design patterns? Before learning the design pattern, readers must establish a kind of consciousness, that is, the design pattern is not only a method and technology, but also an idea and a methodology. It has nothing to do with the specific language. The main purpose of learning design patterns is to establish object-oriented ideas, program to the interface as much as possible, with low coupling and high cohesion, so that the programs you design can be reused as much as possible. "Specious. Learning design patterns can better understand object-oriented ideas. Design patterns are some design skills and tricks. Don't rise to ideas and methodologies, okay?"5. There must be a probation period.