multi_index_container 多索引容器

multi_index_container是c++ boost库中的一个多索引的容器。因工作中用到了，特来测试试用。

 #include "stdafx.h"
 #include "test.h"

 #include <string>
 #include <iostream>
 #include <boost/multi_index_container.hpp>
 #include <boost/multi_index/member.hpp>
 #include <boost/multi_index/ordered_index.hpp>

 using namespace std;
 using namespace boost;
 using namespace boost::multi_index;

 struct Book{
     int id;
     int date;
     string name;
     string author;

     Book(int id_,
          int date_,
          string name_,
          string author_)
     {
         id = id_;
         date = date_;
         name = name_;
         author = author_;
     }
 };

 typedef multi_index_container<
     Book,
     indexed_by<
     ordered_unique<member<Book, int, &Book::id> >,
     ordered_non_unique<member<Book, int, &Book::date> >,
     ordered_non_unique<member<Book, string, &Book::name> >,
     ordered_non_unique<member<Book, string, &Book::author> >
     > >BookContainer;

 typedef BookContainer::nth_index<>::type Id_Index;
 typedef BookContainer::nth_index<>::type Date_Index;
 typedef BookContainer::nth_index<>::type Name_Index;
 typedef BookContainer::nth_index<>::type Author_Index;

 int _tmain(int argc, _TCHAR* argv[])
 {
     BookContainer con;
     con.insert(Book(, , "math book", "jim"));
     con.insert(Book(, , "chinese book", "jam"));
     con.insert(Book(, , "english book", "roland"));
     con.insert(Book(, , "music book", "rose"));

     Id_Index& id_idx = con.get<>();
     for (auto iter = id_idx.begin(); iter != id_idx.end(); iter++)
     {
         cout << iter->id << "  "
             << iter->date << "  "
             << iter->name << "  "
             << iter->author << endl;
     }

     cout << endl;

     Date_Index& date_idx = con.get<>();
     for (auto iter = date_idx.begin(); iter != date_idx.end(); iter++)
     {
         cout << iter->id << "  "
             << iter->date << "  "
             << iter->name << "  "
             << iter->author << endl;
     }

     cout << endl;

     Name_Index& name_idx = con.get<>();
     for (auto iter = name_idx.begin(); iter != name_idx.end(); iter++)
     {
         cout << iter->id << "  "
             << iter->date << "  "
             << iter->name << "  "
             << iter->author << endl;
     }

     cout << endl;

     Author_Index& author_idx = con.get<>();
     for (auto iter = author_idx.begin(); iter != author_idx.end(); iter++)
     {
         cout << iter->id << "  "
             << iter->date << "  "
             << iter->name << "  "
             << iter->author << endl;
     }

     getchar();
     return ;
 }

输出：

可以看到以int型为索引的，输出是按照从小到大来排序的。以string为索引的，是按照字母顺序来输出的。