ATL / WTL / STL

<br />
CBindStatusCallback<CATLAsync>::Download(this, OnData, m_bstrURL, m_spClientSite, FALSE);<br />

struct addone {
   void operator()(std::map<int, int>::value_type & arg) const {
      arg.second++;
   }
};

void FnObj::operator() (const PAIR_KV& PA)
{
    PAIR_KV PAIR = PA;
                                                            
    if(PAIR.first == "Old Key")     // essentially doing the 'find'
    {
        PAIR.second = "This is the NEW value for the old key";
    }
}

typedef map<string, string> MapStr;
  
void FnObj::operator() (MapStr::value_type& PA) {
   if(PA.first == "Old Key") {
      PA.second = "This is the NEW value for the old key";    
   }
}

typedef pair<string, string> PAIR_KV;

#include <map>
#include <iostream>
#include <utility>
#include <algorithm>
 
typedef std::map<int, int> IntMap;
 
struct addone {
	void operator()(IntMap::value_type& v) const {
		v.second++;
	}
};
 
struct print {
	void operator()(IntMap::value_type& v) const {
		std::cout << "first = " << v.first << ", second = " << v.second << std::endl;
	}
};
 
int main(int argc, char* argv[])
{
	IntMap map;
 
	map.insert(std::make_pair(1, 1));
	map.insert(std::make_pair(2, 2));
	map.insert(std::make_pair(3, 3));
	map.insert(std::make_pair(4, 4));
	map.insert(std::make_pair(5, 5));
 
	std::for_each(map.begin(), map.end(), print());
	std::for_each(map.begin(), map.end(), addone());
	std::for_each(map.begin(), map.end(), print());
 
	return 0;
}