Re: [Boost-Users] Does filter_iterator work for maps?

At 3:01 AM +0000 3/15/02, rodrigo_braz wrote:

#include <map> #include <ostream>

#include <iostream>

#include "boost/iterator_adaptors.hpp" #include <algorithm>

using namespace std; using namespace boost;

struct pair_is_active { bool operator()(const pair& p) { return 0 < p.second; } };

ostream& operator<<(ostream& o, pair p) { return o << "(" << p.first << ", " << p.second << ")"; }

int main() { map m; m[0] = 10; m[1] = 15; m[2] = 0; m[3] = 13;

copy(boost::make_filter_iterator(m.begin, m.end()),

copy(boost::make_filter_iterator(m.begin(), m.end()),

boost::make_filter_iterator(m.end(), m.end()), ostream_iterator >(cout,","));

return 0; }

-- Jon Kalb Kalb@LibertySoft.com