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For example, the above is only a simple literal quantity structure. All member variables above are accessed through Singleton, but it is not a single mode. Because the monomer pattern has a more important feature, that is, it can be instantiated only once. The above is only a class that cannot be instantiated, so it is not a monomer pattern. Object literal quantity is one of the methods used to create a single pattern;For example, the above Liezi, Xiao Ming and Xiao Hong do not need to visit Taobao every day to see if the shoes have arrived. At the right time, when the publisher (seller) arrives, they will notify the subscriber (Xiao Hong, Xiao Ming and others).This article was originally written by 52PK, please indicate the source for reprinting!　　一场风暴即将向这个看似幸福的富贵之家袭来……Advantages: Delayed loading (loading only when needed)ACK Reflection Attack　　就这样，一大一小两人踏上了回国之旅。等待他的是非到万不得已他不会触及的前妻甘敬和正在追求其前妻的老同学江浩坤。陆远表面平静，心里却紧张得要死，不知该以什么形象和心态面对甘敬，想来想去还是用一副渣男嘴脸，跟着彭佳禾一起住进了前妻家。