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Among them, most unreliable success studies have chosen the wrong practice method. Although the slogan they shout is deliberate practice, the essence is not deliberate practice, because they do not activate long-term memory ability. For example, the number of times you play chess has no effect, and you cannot become a national player for 10 to 10,000 hours. However, if you look at the published chess scores and then speculate on the national players' playing methods, this deliberate practice method is to save SSD hard disks into the long-term memory hard disks: chunks that store the chess scores.Responsibility chain mode-A request needs multiple objects to process, thus avoiding the coupling relationship between the sender and receiver of the request. Connect these objects into a chain and pass the request along this chain until an object processes it. The specific structure diagram is as follows:山上的橡树能种木耳，橡子果儿能做粉，渣还能喂猪，山上还长蘑菇。张良续道：这样一番解释，纵然不能让项羽心服口服，却也能让他哑口无言。The first step is to encapsulate the policy object. The following code:The soldier first twitched after being stung, Then the gun fell out of his hand, and at last the whole population foamed at the white eyes of both eyes turned out. He lay on the ground and shivered twice before moving completely. Later, when examining the body, he found that his pupils had completely dispersed and his face had turned gray and black. At first glance, he died of acute poison. " Zhang Xiaobo said, through this narration, I can see that he is obviously a person with strong expression ability. He not only speaks vividly, but also has rich body language. Gestures and gestures are basically just right to match the language.Dependence Inversion Principle (DIP) means that abstraction should not depend on details, and details should depend on abstraction, which is the proposed "interface-oriented programming, not implementation-oriented programming". This can reduce the coupling between customers and specific implementations.