Use static_cast, rather than const_cast.


Cheers,

ron


On Jun 13, 2005, at 11:14 AM, Yan Zhang wrote:


<excerpt><fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad-bigger>Hi
Ron,</x-tad-bigger></color></fontfamily>

<fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad-bigger> </x-tad-bigger></color></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger>How do you
“cast "other" to the multi_array type” here? I used</bigger></bigger></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger>      Array
(</x-tad-bigger><color><param>0000,0000,FFFF</param><x-tad-bigger>const</x-tad-bigger></color><x-tad-bigger>
Array& other) :
boost::multi_array<<</x-tad-bigger><color><param>0000,0000,FFFF</param><x-tad-bigger>double</x-tad-bigger></color><x-tad-bigger>,2>(
</x-tad-bigger><color><param>0000,0000,FFFF</param><x-tad-bigger>const_cast</x-tad-bigger></color><x-tad-bigger><<</x-tad-bigger><color><param>0000,0000,FFFF</param><x-tad-bigger>const</x-tad-bigger></color><x-tad-bigger>
boost::multi_array<<</x-tad-bigger><color><param>0000,0000,FFFF</param><x-tad-bigger>double</x-tad-bigger></color><x-tad-bigger>,2>&
> other)</x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger>      {</x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger>      }</x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger> </x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger>And it
failed to compile.</x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger> </x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger>Thank for
your help,</x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger> </x-tad-bigger></fontfamily></fixed>

<fixed><fontfamily><param>Courier New</param><x-tad-bigger>Yan</x-tad-bigger></fontfamily></fixed>

<fontfamily><param>Arial</param><color><param>0000,0000,8080</param><x-tad-bigger> </x-tad-bigger></color></fontfamily>


<bold><fontfamily><param>Tahoma</param><x-tad-bigger>From:</x-tad-bigger></fontfamily></bold><fontfamily><param>Tahoma</param><x-tad-bigger>
boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org]
</x-tad-bigger><bold><x-tad-bigger>On Behalf Of
</x-tad-bigger></bold><x-tad-bigger>Ronald Garcia</x-tad-bigger></fontfamily>

<bold><fontfamily><param>Tahoma</param><x-tad-bigger>Sent:</x-tad-bigger></fontfamily></bold><fontfamily><param>Tahoma</param><x-tad-bigger>
Monday, June 13, 2005 7:54 AM</x-tad-bigger></fontfamily>

<bold><fontfamily><param>Tahoma</param><x-tad-bigger>To:</x-tad-bigger></fontfamily></bold><fontfamily><param>Tahoma</param><x-tad-bigger>
boost-users@lists.boost.org</x-tad-bigger></fontfamily>

<bold><fontfamily><param>Tahoma</param><x-tad-bigger>Subject:</x-tad-bigger></fontfamily></bold><fontfamily><param>Tahoma</param><x-tad-bigger>
Re: [Boost-users] How to inherit from boost::multi_array</x-tad-bigger></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger>Greetings
Yan,</bigger></bigger></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger>I do not
recall the context of the problem you describe below, but It appears
that the definition:</bigger></bigger></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger><bigger><bigger><bigger><bigger>Array
(const Array& other) :</bigger></bigger></bigger></bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger><bigger><bigger><bigger><bigger>boost::multi_array<<double,
2> (other)</bigger></bigger></bigger></bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger><bigger><bigger><bigger><bigger>{}</bigger></bigger></bigger></bigger> </bigger></bigger></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger>is the
problem. the above expression will call the templated constructor. I
believe that the solution here is to cast "other" to the multi_array
type. That should result in the proper constructor call.</bigger></bigger></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger>HTH,</bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger>ron</bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>


<fontfamily><param>Times New Roman</param><bigger><bigger>On Jun 6,
2005, at 12:09 PM, Yan Zhang wrote:</bigger></bigger></fontfamily>

<fontfamily><param>Times New Roman</param><bigger><bigger> </bigger></bigger></fontfamily>


<fixed><fontfamily><param>Courier New</param><x-tad-bigger>I’m read
the posting by Thomas and replay by Ronald on how to inherit from
boost::multi_array as following:</x-tad-bigger><bigger><bigger>  On
Oct 2, 2004, at 10:26 AM, Thomas Mensch wrote: Dear List, I am using
boost 1.31.0 on Linux (with gcc 3.3.2)I would like to create a 2D
array class, which inherits  fromboost::multi_array<<double, 2> class.
However I have problemswith the copy constructor of my class Array. 
Below is the code,which I am trying to run.  </bigger></bigger></fontfamily></fixed>

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