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you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 ...
虚表是 C++ 实现多态的关键机制 。当类中包含虚函数时,编译器会为该类生成虚表 。简单来说,虚表本质上是一个存储虚函数地址的函数指针数组。对于每一个包含虚函数的类,都有一个与之对应的虚表,它就像是一个函数地址的目录,记录着该类中所有虚函数 ...