目录一、多态的概念概念构成条件二、虚函数的重写重写的定义重写的特殊情况override和final关键字区分重写、重载、重定义抽象类的概念三、多态的实现原理父类对象模型补充:生成默认构造方法的场景子类对象模型多态的
I\'d like to enforce a requirement that client script inside a page (which in turn is loaded inside an iframe of another page) will only run when the parent page is on the same top-level domain as t开