一种类属编程方法的应用及分析

传统以C++实现的面向对象的软件系统中，类接口往往以虚拟基类与虚拟函数定义。然而随着软件更新速度的加快，这种方法难以使接口兼顾效率与兼容性。实现一种Policiesbased的设计，以类属组件的形式实现类接口，使其具有按需定制的特点，从而具有更大的复用性。经理论分析和模拟实验证明，这种方法表现优于虚拟函数机制。

Application and Analysis of a Kind of Generic Programming

In an OO software system implemented in (C++) language, class interfaces are usually defined by virtual base class and virtual functions. However, with the acceleration of software renewal,this technique is difficult to satisfied both efficiency and compatibility. A policies-based design is introduced, the class interface with generic components and the class interface according to need is defined and the class interface reuse becomes much easier. Analysis and experimental results show that the performance of polices-based implementation method is superior to virtual function mechanism.