stl vector自定义类型的去重问题

 1 #include <iostream>
 2 #include <vector>
 3 #include <algorithm>
 4 
 5 using namespace std;
 6 
 7 struct test
 8 {
 9         int key;
10         int value;
11 };
12 
13 class finder
14 {
15         public:
16                 explicit finder(test _t):t(_t){}
17                 const bool operator()(test __t)const{return t.key==__t.key;}
18         private:
19                 test t;
20 };
21 
22 int main(void)
23 {
24         vector<test> vTest;
25         test t1 = {1,10};
26         test t2 = {1,11};
27         test t3 = {2,8};
28         test t4 = {2,9};
29         test t5 = {1,6};
30         vTest.push_back(t1);
31         vTest.push_back(t2);
32         vTest.push_back(t3);
33         vTest.push_back(t4);
34         vTest.push_back(t5);
35 
36         for(int index=0; index!=vTest.size(); ++index)
37         {
38                 vTest.erase(find_if(vTest.begin(),vTest.end(),finder(vTest[index])));
39                 if(index == vTest.size())
40                         break;
41          }
42 
43         for(int index=0; index!=vTest.size(); ++index)
44                 cout<<vTest[index].key<<‘\t‘<<vTest[index].value<<endl;
45 
46         return 0;
47 }