4.bind绑定

 #include <iostream>
 #include <string>
 #include <boost/bind.hpp>
 #include <boost/function.hpp>
 #include <vector>
 #include <algorithm>
 #include <functional>
 #include <stdlib.h>
 using namespace std;
 using namespace boost;

 //function函数包装器
 void mainC()
 {
     //atoi  //char * to  int
     boost::function<int(char *)> fun = atoi;
     cout << fun("") + fun("") << endl;
     fun = strlen;
     cout << fun("") + fun("") << endl;
     cin.get();
 }

 //函数包装器指定某个参数
 void mainD()
 {
     boost::function<int(char *)> fun = atoi;
     cout << fun("") + fun("") << endl;
     fun = boost::bind(strcmp, "ABC", _1);
     cout << fun("") << endl;
     cout << fun("ABC") << endl;
     cin.get();
 }

 //类中有绑定函数
 class manager
 {
 public:
     //调用绑定的函数
     void allstart()
     {
         for (int i = ; i < ; i++)
         {
             if (workid)
             {
                 workid(i);
             }
         }
     }

     //绑定调用
     void setcallback(boost::function<void(int)> newid)
     {
         workid = newid;
     }

 public:
     //绑定一个函数
     boost::function<void(int)> workid;
 };

 //worker类
 class worker
 {
 public:
     void run(int toid)
     {
         id = toid;
         cout << id << "工作" << endl;
     }
 public:
     int id;
 };

 void main()
 {
     manager m;
     worker w;

     //类的成员函数需要对象来调用
     //给manager类的成员函数绑定了一个默认的函数,以及对象
     m.setcallback(boost::bind(&worker::run, &w, _1));
     //调用
     m.allstart();
     cin.get();
 }