C ++类扩展 [英] C++ Class Extension

问题描述

有没有办法添加新的方法到类，无需修改原始类定义（即编译的.lib包含类和相应的.h文件）像C＃的类扩展方法？

Is there a way to add new methods to a class, without modifying original class definition (i.e. compiled .lib containing class and corresponding .h file) like C#'s class extension methods?

推荐答案

否。 C ++没有这样的能力。

No. C++ has no such capability.

如其他答案所述，常见的解决方法是：

As mentioned in other answers, the common workarounds are:

• 定义装饰器
/ a> class

• 定义对类实例操作的函数

• Define a derived class, perhaps with a factory to hide the actual implementation class
• Define a decorator class
• Define functions that operate on instances of the class

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