In my current project, there are a lot of code fragments that read like this:

result->insert( "positions",
                positions_.begin(),
                positions_.end(),
                bind( &Position::serialize,
                      _1,
                      boost::cref( locale ) ) );

The scheme is always the same, all that varies is the name of the serialized class. Thus I wanted to write a helper:

result->insert( "positions",
                positions_.begin(),
                positions_.end(),
                serializer< Position >( locale ) );

But the problem is, that AFAIK I have no (documented) way to specify the result type of such a helper function. The syntax I would imagine basically looks like this:

template< typename T >

typename Bind< &T::serialize, _1_type,
  boost::reference_wrapper< const Base::Locale > >::result_type

serializer( const Base::Locale& locale ) {
  return bind( &T::serialize, _1, boost::cref( locale ) );
}

Is something like that possible? I hope so, but I guess I'm not the expert to understand all the details involved in the bind-internals. The above is just an idea, of course it might look different in practice. The question is, whether we can create some mapping between the call of the bind-function and a provider for the result type that users can understand without looking into the code of bind itself.

Regards, Daniel

--
Daniel Frey

aixigo AG - financial training, research and technology
Schloß-Rahe-Straße 15, 52072 Aachen, Germany
fon: +49 (0)241 936737-42, fax: +49 (0)241 936737-99
eMail: [EMAIL PROTECTED], web: http://www.aixigo.de


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