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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.JavaScript Module Specification-Introduction to AMD Specification and CMD SpecificationFlammable fibres: Acrylic, wool, polyamide, polyester and silk　　佟奉全为救被瑞家人追打的茹秋兰，被迫应了奸夫的名，莫荷看见后远走他乡，不知去向。蓝一贵寻仇报复，范五爷终于破产壮烈死！严嵩权倾天下不虚，但年老之后，他最常挂在嘴边的话便是待我与东楼小儿计议后再定，东楼正是严世藩的号，可以说胡宗宪即便见到严嵩，最终也是要说通严世藩的。　　兩個男人，一個女子，即便是大人又如何？在愛情面前依然如懵懂呆呆的孩童，他們兜兜轉轉，你追我趕，自以為懂得愛情的含義，又何曾掌握一絲主動，終歸成為了愛情的奴僕，遍體鱗傷，在所不惜顾涧将一切看在眼里，再也顾不得为了讨好老将军而冷落黎章了，他觉得，应该轮番让手下十个营出去历练，而不是只在校场上空练。