Re: [Boost-users] boost-users [pointer containers] stl set_unions

From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2007-11-28 17:44:26

chun ping wang skrev:
> hmm can you give a small example of what you mean.. calling 
> clone_allocators' allocate clone

Calling new_clone() is probably sufficient for most purposes.

-Thorsten

> On Nov 28, 2007 5:38 AM, Thorsten Ottosen <thorsten.ottosen_at_[hidden] 
> <mailto:thorsten.ottosen_at_[hidden]>> wrote:
> 
>     chun ping wang skrev:
>      > is it possible to use stl set_unions with ptr_container  or  do
>      I have
>      > to hand roll my own.
>      > if yes what inserter should i use or how would i use two containers
>      > having pointer of int
>      > ptr_vector<int> a1;
>      > ptr_vector<int> a2;
>      >
>      > have a1 union a2 and store in a3.
> 
>     Should be possible, but you need a different out-put iterator compared
>     to e.g. std::back_inserter( a_normal_container ).
> 
>     Specifically, you need to call a3's clone_allocators' allocate_clone()
>     in the call to push_back().
> 
>     -Thorsten
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