Re: Réf. : Re: [boost] integer_range iterator return by value semantic

From: Jeremy Siek (jsiek_at_[hidden])
Date: 2000-10-26 09:10:02

Hi Bernard,

Thanks for the comments about integer_range. I've changed the
iterator_range's iterator to return by reference.

One comment about your append_iterator_traits: it is probably
more correct to use typename::Traits::reference as the
reference type instead of value_type&. This also would have avoided
the problem.

template< typename FirstIter, typename SecondIter, typename
Traits=std::iterat\
or_traits< FirstIter>, typename Traits2=std::iterator_traits< SecondIter>
>
struct append_iterator_traits {
  // should make some checks et decide category as greatest common factor

#if 1
  typedef  const typename boost::remove_reference<typename
Traits::value_type>\
::type value_type;
  typedef value_type& reference;
#else
  typedef typename Traits::value_type value_type;
  typedef typename Traits::reference reference;
#endif
  typedef value_type* pointer;
  typedef typename Traits::difference_type difference_type;
  typedef typename Traits::iterator_category iterator_category;
};

Ciao,

Jeremy

----------------------------------------------------------------------
 Jeremy Siek                        www: http://www.lsc.nd.edu/~jsiek/
 Ph.D. Candidate                  email: jsiek_at_[hidden]
 Univ. of Notre Dame         work phone: [phone]
----------------------------------------------------------------------