Re: [Boost-users] does ptr_* solves this?

4 Apr 2006

      Hi,

Thanks for the ideas, however I do not understand how typeid may be used to 
solve this. How do I instantiate my deallocator with information that comes 
from typeid?

thanks again
Marco

On Monday 03 April 2006 14:41, Thorsten Ottosen wrote:
...
me22 wrote:
...
On 4/1/06, Marco Correia  wrote:
...
B* obj = my_alloc<D>::allocate(1);
obj = new (obj) B();
container.insert(obj);
My problem is that when an object is removed from the container, I
have to
...
...
explicitely deallocate it from my allocator, but the static info was
lost, so
...
...
I cannot do
my_alloc::dealloc
I've asked in boost irc channel, and someone told me ptr_* boost
libraries
...
...
solve this problem, is this correct?
I don't think that the ptr_ ones will, but shared_ptr allows you to
specify a custom deleter at construction, which seems to be to be just
what you need.
Well, if you need to keep the exact type around, you can use typeid().
But you need that both with shared_ptr and ptr_vector.
With ptr_vector, you can plug your allocator into new_clone() and
delete_clone().
-Thorsten
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Marco Correia 