[Boost-users] Fusion transform question

From: Joel FALCOU (joel.falcou_at_[hidden])
Date: 2008-07-19 16:08:29

I started porting over some old codes that used hand-made MPL<->concrete 
object code to Fusion.
I'm currently trying to have the following to work with no results so far :

struct make_arg
{
  template<class Type> struct result
  {
    typedef typename boost::add_reference<typename 
boost::add_const<Type>::type >::type type;
  };
};

template<class Args> struct tree
{
  typedef Args    children;
  typedef typename bf::result_of::transform<Args,make_arg>::type contents;

  template<class T0,class T1> tree( const T0& t0 , const T1& t1 )
  : mArgs( /* what to put here ??? */ ) {}

  template<size_t I>  typename bf::result_of::at_c<contents,I>::type 
get() const
  {
    return bf::at_c<I>(mArgs);
  }

  contents mArgs;
};

int main()
{
  int k=3;
  float u=7.2;
  tree< bf::vector<int, float> > tree(k,u);

  return 0;
}

The question - as stated - in the code is how to simply build the mArgs 
member from the t0,...,tn arguments ?
Thanks in advance.

-- 
Joel FALCOU
Research Engineer @ Institut d'Electronique Fondamentale
Université PARIS SUD XI
France