gorunbu的专栏

一、重载(overload)1.作用域相同； 2.函数名字相同； 3.函数参数不同 编译器生成的函数名字不同，名字粉碎】； 4.与 virtual 关键字无关；void print(int a){cout<<"print(int): "<<a<<endl;}void print(double a){cout<<"print(float): "<<a<<endl;}class base

19.override operator << struct topic_descript { btstring topic_url; //RuleEngine/LineDetector/Crossed btstring name_space; bt

#include <stdio.h>#include <string.h>#include <stdlib.h>#include <iostream>#include <string>#include <algorithm>using namespace std;//c++ function object// class Add // { // public: // int

C++ Bit FieldsVisual Studio 2010Other VersionsClasses and structures can contain members that occupy less storage than an integral type. These members are specified as bit fields. The syntax for bit-

#include <iostream>#include <stdio.h>using namespace std;namespace bug{ enum month1 { January = 1, February = 2 }; enum month2 { January2 = 3, February2 = 4 }; class bug1 { pub

//1.derived class can call the base class function, but the base class can not call the derived class function, member pointer can not do it //2.c++ member function is strict //3.the size of C++ poi

1. 2.#include <stdio.h>#include <iostream>#include <string>using namespace std;#define DBG(...) class object_arg { string name; // Object identifier static int objectCount;public: obj

1.must have a virtual function; 2. must have some relationship between the source pointer and the destination pointer 3. a invalid pointer can call the adress[pointer and function ], but can’t ca

1.旧式强制转换依赖于所涉及的数据类型，具有与 const_cast、 static_cast 和 reinterpret_cast 一样的行为。在合法使用 static_cast 或 const_cast 的地方，旧式强制转换提供了与各自对应的命名强制转换一样的功能。如果这两种强制转换均不合法，则旧式强制转换执行 reinterpret_cast 功能。dynamic_cast 是 C++ 对

http://www.cppblog.com/deercoder/archive/2010/01/12/105530.aspxC++友元的一个问题-----------由派生类访问基类的私有成员继承是一个永恒的话题，可是带来的问题却也是多多啊。最近一直在思考一些细节的东西，于是也有了不少收获。今天，当我想要用派生类访问基类的私有成员时，发现问题了……代码1：（没有问题，对照下面的代码来看错误之处

如何在类成员函数中默认引用类成员？class CAbc;class CAbc{private:int m_abc;public:void fun0(int &p=NULL)//编译错误{printf("%d",p);}void fun1(const int &p=NULL)//编译通过{printf("%d",p);}void fun2(int &p=this->m_ab

typdef 以及 typename 声明类型 时候，需要注意与const 使用时的 修饰作用。//pointer operator, not allowed //error: invalid operands of types ‘int*’ and ‘int*’ to binary ‘operator+’【指针不能重载运算符】#include <stdio.h>#include <stdli

unsigned int str_to_ip(const char *pStr) { signed char j = 0; unsigned char cIp; unsigned int uiRet = 0; const char *p = pStr;cIp = (unsigned char)atoi(p);uiRet |= ( ((unsigned in

c++成员函数默认参数 多文件编写注意.h file#ifndef PARAMETER_H_#define PARAMETER_H_class cabc{private: char m_abc; static int def;public: //error: invalid use of non-static data member 'cabc::m_abc'

some resource come from network, thanks all this people!#include <string>#include <iostream>#include <tinyxml.h>using std::string;using std::cout;using std::endl;struct xmlNodeList{ TiXmlNode