"Thorsten Ottosen" <nesotto@cs.auc.dk> wrote in message news:d48kcf$ta$1@sea.gmane.org...
base::operator==(...) should delegate to a protected or public function. That won't solve the problem.
| Second if you provide comparasion operators (with concept checking or not) | it's quite strange that ptr_containers aren't CopyConstructible and Assignable.
not at all. copying by cloning is vastly different from copying; so different that those two things should not be interchangeable.
I know. But how else could polymorphic objects to be copied correctly?
I looked briefly at it; I recall to think that it was not worth the effort. I don't think so, but ok.
I talked with Howard Hinnant about the issue and I think we concluded that the introduction of move-semantics and changes to the standard algorithms would allow us to write a proxy reference for the iterators in pointer containers so we can call sort() etc. in the usual manner. I'm really like it. but when? right now we should use em as members anyway.
-- Pavel Chikulaev