标准C++中没有真正的面向对象的函数指针。这一点对C++来说是不幸的，因为面向对象的指针（也叫做“闭包（closure）”或“委托（delegate）”）在一些语言中已经证明了它宝贵的价值。此例展示在C++编译器上实现优化而可靠的“委托”的技术-Standard C++ in no real object-oriented function pointer. This is C++ It is unfortunate, because the object-oriented in some languages it has proven valuable. This case displayed in C++ compiler optimal and reliable " commissioned"　the technical