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Whether you are a new salesman or an old salesman, In the process of sales promotion, we must treat each customer with a sincere attitude, take the initiative to think of the customer, take the customer's needs as the focus of work, and we must do a good job in the whole process of pre-sale, in-sale and after-sale service, so that the customer can recognize your work and make friends with you, so that you will gradually grow from a new salesman to a successful salesman.FlyWeightFactory is responsible for creating and managing meta-units. When a client requests, the factory needs to check whether there are eligible objects in the current object pool. If so, it returns the existing object. If not, it creates a new object. FlyWeight is a superclass. When it comes to shared pools, It is easy to think of JDBC connection pooling in Java, Considering the characteristics of each connection, It is not difficult for us to sum up: Applies to several objects that are shared, They have some common attributes, Take the database connection pool as an example, url, driverClassName, username, password and dbname, these attributes are the same for each connection, so it is suitable to use the meta-sharing mode to process, build a factory class, take the above similar attributes as internal data and the others as external data, and pass them in as parameters when calling methods, thus saving space and reducing the number of instances.In some time series competitions, I will set aside some data as verification sets.Public delegate void DoSth (object sender, EventArgs e);很显然他的伏击计划失败了，若是多待上片刻说不定还会有生命危险。公元1840年鸦片战争以后，不堪忍受清朝残酷压榨和外国侵略的各地中国人民，纷纷起来英勇抗争。其中以洪香全为首的"天帝会"势力最大。其于1851年在广西金田村起义，定国号为"太平天国"。Around these problems, Rui Yi interviewed the founders of some children's thinking ability training institutions, parents who have invested capital in this field and have let their children receive thinking ability training.