[boost] [bind] result type deduction/access?

From: Daniel Frey (daniel.frey_at_[hidden])
Date: 2003-08-26 09:17:01

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: [phone], fax: [phone]
eMail: daniel.frey_at_[hidden], web: http://www.aixigo.de