Boost :: Bimap等效于双向多图 [英] Boost::Bimap equivalent of bidirectional multimap

问题描述

问题的第一部分是我正在尝试使用boost :: bimap，但是从文档中我还不清楚如何定义双向多图.

First part of the question is that I am trying to use boost::bimap, but from the documentation it is unclear to me how to define a bidirectional multimap.

问题的第二部分是我需要它是一个方向的地图，而另一个方向的多重地图，可以使用boost :: bimap吗?

The second part of the question is that I need it to be a map in one direction and a multimap in the other direction, can this be done using boost::bimap ?

任何人都有这方面的经验或可以将我指向正确的页面吗?

Has anyone experience of this or can point me to the correct page ?

推荐答案

所有内容都在文档中...

All is in documentation... http://www.boost.org/doc/libs/1_51_0/libs/bimap/doc/html/boost_bimap/the_tutorial/discovering_the_bimap_framework.html

typedef boost::bimap<bimaps::multiset_of<int>, bimaps::set_of<int>> bimap_t;

示例.

#include <iostream>
#include <boost/bimap.hpp>
#include <boost/bimap/set_of.hpp>
#include <boost/bimap/multiset_of.hpp>

namespace bimaps = boost::bimaps;

int main()
{
   typedef boost::bimap<bimaps::multiset_of<int>, bimaps::set_of<int>> bimap_t;
   typedef bimap_t::value_type value_type;
   bimap_t bimap;
   bimap.insert(value_type(1, 1));
   bimap.insert(value_type(1, 2));
   auto& left = bimap.left;
   auto it = left.find(1);
   std::cout << "LEFT" << std::endl;
   for (; it != left.end(); ++it)
   {
      std::cout << it->first <<  " " << it->second << std::endl;
   }
   auto& right = bimap.right;
   auto r_it = right.find(2);
   std::cout << "RIGHT" << std::endl;
   for (; r_it != right.end(); ++r_it)
   {
      std::cout << r_it->first << " " << r_it->second << std::endl;
   }
}

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