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  "contentMarkdown": "# 静态的实例【单例模式中】\n\n# 静态的实例【单例模式中】\n\n> 创建时间：2020/9/14 14:39\n\n静态的实例可以作为静态函数和动态函数之间的桥梁。\n\n静态函数不能调用动态函数，因此，如果想用静态函数调用动态函数，就可以使用静态的实例（单例模式中的Instance）。\n\n静态函数不能直接调用动态函数的原因是：静态函数可以在类实例化之前调用，而此时，无法确定类是否被实例化。动态函数是类的动态实例才有的成员，静态语句没有直接访问动态函数的途径。\n\n如果写一个静态的实例，就可以保证类在被静态地访问到时，就已经有一份实例，可以访问到动态函数。\n"
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