On Fri, 07 Dec 2007 16:52:26 -0800, Robert Ramey wrote:

i have used non-intrusive serialization on a function object without problems.

So I don't see a problem here so I'm clearly missing something.

Hey, can you post this please? I'm clearly missing something because I did some wholly backward thing. -- Sohail Somani http://uint32t.blogspot.com

On Fri, 07 Dec 2007 20:16:41 -0800, Robert Ramey wrote:

I'l have to go dig it up.

I'll post it if you make a demo out of it and prepare documentation to add to the "Case Studies" section of the manual.

Robert Ramey

Let see how pretty it is first :-) -- Sohail Somani http://uint32t.blogspot.com

Hi there,

Hmmm ...

i have used non-intrusive serialization on a function object without problems.

So I don't see a problem here so I'm clearly missing something.

Robert Ramey

See below for a working example. The code that doesn't work is commented out at the end. If boost::function would provide an access method for the objects stored in it, writing the serialization code would be no big deal, I would assume. As it is, however, I think I'll have to stick to the vector . Best, Ruediger Berlich /********************************************************************/ #include <iostream> #include <sstream> #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; using namespace boost; class functionObject{ /////////////////////////////////////////////////////////////// friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version){ using boost::serialization::make_nvp; ar & make_nvp("innerState_", innerState_); } /////////////////////////////////////////////////////////////// public: functionObject(void){ innerState_=0; } functionObject(int is){ innerState_=is; } void operator()(void){ cout << "Inner state is " << innerState_ << endl; } private: int innerState_; }; main(){ vector A; for(int i=1; i<4; ++i){ shared_ptr<functionObject> p(new functionObject(i)); A.push_back(p); } // Serialization works ostringstream oss; { boost::archive::xml_oarchive oa(oss); oa << boost::serialization::make_nvp("functionObjectContainer", A); } cout << oss.str() << endl; // Now the same with boost::function() vector > B; for(int i=1; i<4; ++i) B.push_back(functionObject(i)); vector >::iterator it; // Calls functionObject::operator(), works for(it=B.begin(); it!=B.end(); ++it) (*it)(); // *** Does not work: *** // ostringstream oss2; // { // boost::archive::xml_oarchive oa(oss2); // oa << boost::serialization::make_nvp("functionContainer", B); // } // cout << oss2.str() << endl; // // Compilation fails with error message: // error: ‘struct boost::function’ // has no member named ‘serialize’ }