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十岁的余卓颖热爱打乒乓球，命运让她遇上内地专才计划来港的教练--郭一，在专业指导下成绩骄人。惟卓颖胜负心重，遇上挫败而陷入低潮期，加上与母亲--芷昕沟通不足，渐生隔阂。吕雉说道：如此说来，真是成皋那边告急？樊哙说道：应该是的。翘儿带必归磕头行礼过后，杨长帆一家三口终是离家而去。/victoryOne problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.孤独的美食家中国版相册Load from File