Why virtual function is slow
Why virtual function is slow
通常，并不是虚拟调用本身很慢，而是编译器无法内联它们。
https://softwareengineering.stackexchange.com/questions/191637/in-c-why-and-how-are-virtual-functions-slower
Why virtual function is slow
通常，并不是虚拟调用本身很慢，而是编译器无法内联它们。
https://softwareengineering.stackexchange.com/questions/191637/in-c-why-and-how-are-virtual-functions-slower