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范依兰轻轻点头道：这个容易，范紫大半年之前已经动身去了草原，现在已经重新建立起当年的网络。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.二十世纪二十年代初，军阀割据民生凋敝，乱世中少年沈其南一家忽遭飞来横祸。父亲因无意间卷入走私阴谋而被杀害，母亲在逃亡中蒙难，兄妹四人历经艰险逃到上海却不幸离散。多年后，长大成人的兄妹三人在经过一番遭际之后重逢。时逢乱世，内忧外患，在绝望中经历层层考验的沈其南逐渐成长起来，在爱和信仰的影响下，成长为上海滩有名的建造师。在短暂的上海大开发时期，在寸土寸金的黄浦江边，沈其南以匠心为本，怀揣理想以民为先。他为改造棚户区的居住环境而不懈努力，为建造廉租房而鞠躬尽瘁。经过火与血的洗礼，沈其南立志为备受战乱之苦的平民百姓建造牢固而温暖的家。侵华战争开始，国难当头，沈其南心怀家国大义，及时揭发了军事防御工事中偷工减料的问题，阻止了战争中更大的伤亡，同时也终于查清了父亲当年走私案的真相，还父亲一个清白。等不多时，两对人马安然归队，确实有见埋伏的倭寇，见了探哨远远后撤，哨兵也就没敢再追。19岁的建筑专业学生Karl，在大学第二学期开始之前，他的父母强迫他搬到他叔叔的公寓去学习独自生活。迫于生计，Karl在网上打零工。但当他的一个主要客户突然失踪之后，他陷入了财务危机，没有办法支付生活开销。一天，神秘的Vlad搬进公寓成为了他的邻居。原来他是躲避家人搬进来的，并且要求Karl与他同屋居住并且假扮他的男朋友，作为回报Vlad会支付Karl的房租。这对假戏男友最终会变成真正的恋人吗？