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The template method pattern defines the algorithm skeleton in an operation in an abstract class and delays the implementation of some specific steps to subclasses. The template method enables subclasses to redefine specific steps of the algorithm without changing the structure of the algorithm, thus achieving the effect of reusing codes. The specific structure diagram is shown below.In fact, when everyone watches friends and classmates get married, I will still envy it a little, I will also look forward to the future. It didn't take long for me to think it was better to be single again. Perhaps it is a person who has been around for a long time and likes freedom. They all say that beautiful love is performed in Korean dramas. The reality does not exist. In fact, the more people who say that they don't care about marriage and don't believe in love, the more they yearn for happiness. They just say that they don't have illusions, because they are afraid of not getting good love and disappointed, so they deliberately don't expect it.Zhejiang Province小说这一章节到此结束。她静静地仰躺着，耳听得月洞门外响起轻轻的脚步声，便知道是小草进来了。　　在医院，他大声支使着医护人员，一Reactor pattern (reactor pattern) is an event design pattern that handles one or more clients concurrently delivering service requests. When the requests arrive, the service handler uses the I/O multiplexing policy and then synchronously distributes these requests to the relevant request handler.