ATL / WTL / STL

CComPtr<IHTMLElement> m_pBody;

hr = spHTML->get_body(&m_pBody); <-ASSERTION FAILED 2nd Time
if (FAILED(hr))
  return hr;

//The assert on operator& usually indicates a bug.  
//If this  is really what is needed, however, take the address of the p member explicitly.

T** operator&()
{
   ATLASSERT(p==NULL);
   return &p;
}

<br />
__interface IConfigurer : IDispatch<br />
{<br />
	[id(1), helpstring("method Open")] HRESULT Open([in] BSTR machineName);<br />
	[id(2), helpstring("method Close")] HRESULT Close(void);<br />
	[id(3), helpstring("method OpenService")] HRESULT OpenService([in] BSTR serviceName, [out,retval] IDispatch** ppService);<br />
};<br />

typedef map<const string, string, less<string> > MapStr;
typedef pair<string, string> PAIR_KV;
                                                            
class FnObj
{
public:
    void operator() (const MapStr::iterator& it);
};
                                                            
int main()
{
    MapStr mapStr;
    // PopulateMap(mapStr);
    // DisplayMap(mapStr);
    MapStr::iterator iterB = mapStr.begin(), iterE = mapStr.end();
    for_each(iterB, iterE, FnObj());
    // DisplayMap(mapStr);
                                                            
    return 0;
}
                                                            
void FnObj::operator() (const MapStr::iterator& it)
{
    MapStr mapStr;
    PAIR_KV PAIR;
                                                            
    if((*it).first == "Old Key")     // essentially doing the 'find'
    {
        mapStr.erase(it);
        PAIR.first = "New Key";
        PAIR.second = "This is the value of the new key";
        mapStr.insert(PAIR_KV(PAIR.first, PAIR.second));
    }
}