Re: [Boost-users] How to use property_map?

Subject: Re: [Boost-users] How to use property_map?
From: Yaohua Xiong (xiongyaohua_at_[hidden])
Date: 2010-04-07 19:54:09

Hi, Jeremiah. Thanks for your reply.

> The declaration "PMap map();" declares a function named "map" that returns
> an object of type "PMap". Â Just use the original form "PMap map;" if you
> want to declare an actual map.

You are right. What a stupid mistake I make, probably I've been
writing Python for too long time :-). As for the original form do you
have some speculation on why it's crashing?

After I surf on the Internet for a while, I found a solution to the
crashing problem by change the program into:

#include <iostream>
#include <map>
#include <string>
#include <boost/property_map/property_map.hpp>
using std::string;
using boost::put;
using boost::get;

int main()
{
 typedef std::map<std::string, int> Map;
 typedef boost::associative_property_map<Map> PMap;

 Map tmp;
 PMap map(tmp);
 put(map, string("acc"), 1);
 get(map, string("acc"));

 return EXIT_SUCCESS;
}

-- 
Yaohua Xiong
Traffic and Transportation Engineering College, Tongji Univ.
Cao An Road 4800#, Jia Ding District, Shanghai,  China