post formerly in codeguru
来源:互联网 发布:怎样用淘宝优惠券赚钱 编辑:程序博客网 时间:2024/05/18 17:26
the difference between a class and a struct is that class members are private by default, whereas struct members are public by default 结构和类的区别是:类成员默认是私有的,而结构成员默认是公有的.
如果使用默认参数的话,那么要么全部提供,或者按照从右至左的方式来提供.
a virtual destructor is not overridden when redefined in a derived class. Rather, it is extended: the lower-most destructor first invokes the destructor of its base class and only then, it is executed. 虚拟析构函数在继承类中是不能重写的,而仅仅是扩展,,虚拟析构函数只在底层析构函数激发基类析构函数的时候被执行,一般地在具有继承类层次的结构中,一般都要定义一个虚拟的析构函数,这样就能保证整个层次结构中的析构函数在适当的时候被调用.
一般地,都这样用,
virtual ~Interface() = 0; //pure virtual destructor declaration
Interface::~Interface()
{} //definition of a pure virtual destructor; should always be empty
Normally the purpose of a pure virtual function is to force descendant class to define an implementation in order to create an instance of it.而定义纯虚拟构造函数是为了让子类来定义一个实现,以便创建一个实例.
- post formerly in codeguru
- Wireshark (Formerly Ethereal) 1.00
- fedy - formerly Fedora Utils
- Inside CRT: Debug Heap Management -- Learn how heap management is done in a debug build[www.codeguru.com]
- http://www.codeguru.com/
- codeguru文章翻译(1)
- 【codeguru】消息映射宏
- 【codeguru】消息映射
- GFI Sandbox™ (formerly CWSandbox)
- Get/Post in http
- Post-processing in Ogre
- Pre,in,post expression
- Post-Processing in ERC
- SmartTemplate更名为QuickSkin (formerly SmartTemplate)
- show text in meta post
- My first post in CSDN
- UVa10701 - Pre, in and post
- Multipart Form Post in C#
- 突然想戒掉烟和酒……
- .NET下的FTP上传,下载文件(支持中文名)
- Java的hashCode解析
- [转]AJAX应用框架---DWR
- 死锁、活锁和饿死
- post formerly in codeguru
- C++: Under the Hood
- 局域网自动备份删除
- Travian的第一次成功攻击
- 挖Linux中的古老缩略语
- 安装 VC++ 重启
- 批量分离和附加数据库
- 红眼病流行了
- VS2005中使用webBrowser控件实现自动登录Gmail邮件的实例