Inside the C++ Object Model Stanley B. Lippman
Publisher: Addison-Wesley Professional

If the class has the data member, which has default constructor. [Notes] Inside The C++ Object Model. ƞ�造，解构，拷贝语意学6. Layout Cost for Adding Encapsulation inheritance don't have cost. 1,default constructor constructionA default constructor synthesiszes only when the implementation needs it.When the implementation needs it?1.1,Member class object with default constructor.1.2,B. Posted on 2011年06月2日 by waterboy79. À�inside the c++ object model》读书笔记之七站在对象模型的尖端 这一章主要讨论三个著名的C++语言扩充性质,它们分别是:template,exception和runtime type identification. But virtual function and virtual base class will add extra cost. Data语义学：一.一个类得实际大小受到三个因素影响：1.语言本身所造成的额外负担.比如virtual ，虚基类.2.编译器对于特殊情况所提供的优化处理3.内存对齐(Alignment)的限制. ƞ�造函数语意学3.data语意学4.funtion语意学5. The generation of Default Constructor.