iterator_adaptor and statefull policies.

From: rogeeff (rogeeff_at_[hidden])
Date: 2001-12-14 00:46:05

Hi,

I have a question about iterator_adaptor. The iterator_adaptor seems 
to assume that Policies are stateless. For example, it never copy 
them in copy constructor and iterator. Why it was designed that way?
Another related questions:
 Why does not iterator_adapter has a copy_constructor/assignment 
accepting Base iterator?
 Why does not iterator_adapter has a constructor accepting some 
argument to be passed to policy constructor?
  
  If there are reasons for such design, how to implement what I need?

Another separate issue:
If my Base input iterator returns reference as result of operator*, 
how to prevent iterator_adaptor::operator-> to create a proxy?

Thank you,

Gennadiy.