Re: [Boost-users] boost::ptr_vector with const members

From: Josh Quigley (josh.quigley_at_[hidden])
Date: 2007-05-10 19:05:10

Thanks, that is the answer I was after (I now know I wasn't doing anything
wrong).

As for the analogy, I only wanted to show the behavior of recovering a const
pointer.

-----Original Message-----
From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Thorsten Ottosen
Sent: Friday, 11 May 2007 12:39 AM
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] boost::ptr_vector with const members

Josh Quigley skrev:
> Hello,
> 
>  
> 
> I'm trying to use boost::ptr_vector with constant members, like
> 
>  
> 
> // Excerpt 1
> 
> boost::ptr_vector<const int> myVector;
> 
> myVector.push_back(new int(5));            //This line fails, see 
> comment below
> 
> myVector[1] = 7;                                    //This should fail, 

I haven't spent time trying to support ptr_container<const T>, so I 
don't know if the fix will be easy. I'll put it on my todo list though.

Note that

void foo( const ptr_vector<int>& vec )
{
   vec[1] = 7;
}

fails.

I'm not	sure I completely understand your analogy though: shared_ptr<T> 
and a ptr_vector<T> are not similar types; the former is a smart 
pointer, the latter a container.

-Thorsten

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