copy constructor 的使用时机【源自c++ primer】
来源:互联网 发布:js获取字符串位置 编辑:程序博客网 时间:2024/06/05 10:11
For many classes, the synthesized copy constructor does exactly the work that is needed.Classes that contain only members that are of class type or members that are of built-in (butnot pointer type) often can be copied without explicitly defining the copy constructor.
However, some classes must take control of what happens when objects are copied. Such classes often have a data member that is a pointer or that represents another resource that is allocated in the constructor. Other classes have bookkeeping that must be done whenever a new object is created. In both these cases, the copy constructor must be defined.
防止copy的办法
To prevent copies, a class must explicitly declare its copy constructor as private .
- copy constructor 的使用时机【源自c++ primer】
- 【C++】Copy Constructor
- copy constructor的实现
- <c:choose>标签的使用--源自技术
- [C++]copy constructor and copy assignment operator
- copy constructor的一些疑问
- Copy Constructor 的建构操作
- 类的三个特殊成员Copy Constructor、Copy-Assignment Operator、Destructor重载与使用
- copy constructor
- copy constructor
- copy constructor
- Copy Constructor
- Copy Constructor
- copy constructor
- copy constructor
- Copy Constructor
- copy constructor
- Default Constructor && Copy Constructor
- AVI(Audio Video Interleaved的缩写)是一种RIFF(Resource Interchange File Format的缩写)文件格式
- 表单提交添加事件
- 什么是流水线友好的代码?
- MIGO 屏幕增强
- C++ 单词查询程序
- copy constructor 的使用时机【源自c++ primer】
- BlackBerry App World应用提交和其他商业服务(一)
- adb shell下使用命令行删除android系统中指定文件和文件夹
- 不一样的课程表,不一样的Excle--用Excle进行设计(12):网状结构
- Asp.net使用MySQL 乱码处理的破解方案
- AIX上ulimit -a 输出的含义
- Struts的tiles标签
- 在 .NET 中使用大对象
- jpg/gif转ico,轻松做个漂亮的图标