4.bind绑定

 1 #include <iostream>
 2 #include <string>
 3 #include <boost/bind.hpp>
 4 #include <boost/function.hpp>
 5 #include <vector>
 6 #include <algorithm>
 7 #include <functional>
 8 #include <stdlib.h>
 9 using namespace std;
10 using namespace boost;
11 
12 
13 //function函数包装器
14 void mainC()
15 {
16     //atoi  //char * to  int
17     boost::function<int(char *)> fun = atoi;
18     cout << fun("123") + fun("234") << endl;
19     fun = strlen;
20     cout << fun("123") + fun("234") << endl;
21     cin.get();
22 }
23 
24 //函数包装器指定某个参数
25 void mainD()
26 {
27     boost::function<int(char *)> fun = atoi;
28     cout << fun("123") + fun("234") << endl;
29     fun = boost::bind(strcmp, "ABC", _1);
30     cout << fun("123") << endl;
31     cout << fun("ABC") << endl;
32     cin.get();
33 }
34 
35 
36 //类中有绑定函数
37 class manager
38 {
39 public:
40     //调用绑定的函数
41     void allstart()
42     {
43         for (int i = 0; i < 15; i++)
44         {
45             if (workid)
46             {
47                 workid(i);
48             }
49         }
50     }
51 
52     //绑定调用
53     void setcallback(boost::function<void(int)> newid)
54     {
55         workid = newid;
56     }
57 
58 public:
59     //绑定一个函数
60     boost::function<void(int)> workid;
61 };
62 
63 //worker类
64 class worker
65 {
66 public:
67     void run(int toid)
68     {
69         id = toid;
70         cout << id << "工作" << endl;
71     }
72 public:
73     int id;
74 };
75 
76 
77 void main()
78 {
79     manager m;
80     worker w;
81 
82     //类的成员函数需要对象来调用
83     //给manager类的成员函数绑定了一个默认的函数,以及对象
84     m.setcallback(boost::bind(&worker::run, &w, _1));
85     //调用
86     m.allstart();
87     cin.get();
88 }