为什么构造函数不能是虚拟的 [英] why cant a constructor be virtual

问题描述

为什么构造函数不能在C ++中虚拟化?

Why cant a constructor be virtual in C++?

推荐答案

构造函数不能是虚拟的，因为在调用构造函数时虚拟表将不可用在内存中.因此，我们不能有一个虚拟的构造函数.
http://www.daniweb.com/software-development/cpp/threads/137286 [

A constructor cannot be virtual because at the time when the constructor is invoked the virtual table would not be available in the memory. Hence we cannot have a virtual constructor.
http://www.daniweb.com/software-development/cpp/threads/137286[^]

因为没有一个继承的类可以实现具有相同名称的方法，例如，参见竞争对手" [ ^ ].

Because no one of the inheriting classes could implement a method having the same name, see, for instance, "The Competitors"[^].

以下是该人本人的回答- ^ ]

Here is the answer from the man himself - http://www2.research.att.com/~bs/bs_faq2.html#virtual-ctor[^]

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