Re: [boost] Re: Re: Re: stl-like containers of pointers

From: Felipe Magno de Almeida (felipe.almeida_at_[hidden])
Date: 2005-03-10 15:09:59

Thorsten Ottosen wrote:
> "Felipe Magno de Almeida" <felipe.almeida_at_[hidden]> wrote in message 
> news:42309EF9.1080506_at_ic.unicamp.br...
> | Thorsten Ottosen wrote:
> | > "Felipe Magno de Almeida" <felipe.almeida_at_[hidden]> wrote in message
> | > news:4230862D.6040003_at_ic.unicamp.br...

[snipped]

> 
> yes, but this is no ordinary std::vector. std::vector is for self-contained
> value types; boost::ptr_vector is for pointers whose life-time
>  must be managed.
> 
> | boost::vector<A> vector1, vector2;
> | vector1 = vector2;
> 
> boost::ptr_vector don't have an assignment operator; it is not Assignable nor 
> CopyConstructible.
> 
> you must clone or release the container:
> 
> vector1 = vector2.clone();
> vector1 = vector2.release();
> 

I see, but it makes impossible for use ptr_containers inside other 
containers. Isnt this too restrictive?
Cant they be implemented in terms of these?
There were a discussion about this before? So that I can know the 
reasons why?
what I was think is that the copy constructor and the assignment 
operator could be part of the clone policy. Maybe Im wrong.

> br
> 
> Thorsten 
> 
> 
> 
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-- 
    Felipe Magno de Almeida
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