[boost] [Parameter] template return type

From: Brook Milligan (brook_at_[hidden])
Date: 2008-03-24 18:15:56

I am trying to use Boost.Parameter to construct some objects, much
like make_tuple(A,B) does except with some of the arguments being
optional and replaced by defaults (which may depend on the other
arguments).  The return type, however, must be a template class with
the template arguments dependent on the arguments supplied.  

Is this possible?

How can the return type for a Boost.Parameter frunction be specified
as a template type?

Thanks for your help.

Cheers,
Brook