Doubt with auto_ptr_ref

[CID]

Hello all,

I was reading about auto_ptr from TC++PL. It tells, the purpose of
auto_ptr_ref is to implement the destructive copy semantics for
ordinary auto_ptrs.

Can somebody there please explain how it achives the requirement ? I am
interested to know how auto_ptr_ref helps in transferring ownership and
how it avoids copying of const auto_ptrs.

Any help will be appreciated.
Thanks and Regards
CID

 

[Jonathan Turkanis]

Hello all,

I was reading about auto_ptr from TC++PL. It tells, the purpose of
auto_ptr_ref is to implement the destructive copy semantics for
ordinary auto_ptrs.

Can somebody there please explain how it achives the requirement ?

It doesn't. The references cited here explain how it was supposed to work and
why it's broken:

http://www.kangaroologic.com/move_ptr/

I
am interested to know how auto_ptr_ref helps in transferring
ownership and how it avoids copying of const auto_ptrs.

Jonathan