include iostream include map include string struct end_init_t end_init

#include <iostream>
#include <map>
#include <string>

struct end_init_t { };

end_init_t end_init;

template <typename Key, typename Value, typename Compare = std::less<Key>,
          typename Allocator = std::allocator<std::pair<const Key, Value> > >
class map_initializer
{
public:
    typedef typename std::map<Key, Value, Compare, Allocator> map_t;
    
    map_initializer() { }
    
    map_initializer &operator,(const std::pair<Key, Value> &pair)
    {
        _map.insert(pair);
        return *this;
    }
    
    map_t operator,(end_init_t)
    {
        return _map;
    }
private:
    map_t _map;
};


const std::map<std::string, std::string> mymap = (
    map_initializer<std::string, std::string>(),
        std::make_pair("fruit", "apple"),
        std::make_pair("language", "c++"),
    end_init);

int main()
{
    std::cout << mymap.find("fruit")->second << std::endl;
}