Re: [Boost-users] [Boost.MultiIndex] Problem using dataelement fromderived class as key

From: Manuel Jung (gzahl_at_[hidden])
Date: 2007-02-28 15:28:18

"JOAQUIN LOPEZ MU?Z" wrote:

> Hi Manuel,
> 
> ----- Mensaje original -----
> De: Manuel Jung <gzahl_at_[hidden]>
> Fecha: Miércoles, Febrero 28, 2007 7:38 pm
> Asunto: [Boost-users] [Boost.MultiIndex] Problem using data element
> from derived class as key
> Para: boost-users_at_[hidden]
> 
>> Hi,
>> 
>> Im having a problem. I derive class B from class A. class a has
>> the member > A::id. I want to use this one as key for my
>> MultiIndexContainer.  But i get the following compiling errors:
>> 
>> test.cpp:41: Fehler: Templateargument »&A::id« konnte nicht in
>> »unsigned int
>> B::*« umgewandelt werden
>> test.cpp:42: Fehler: Templateargument 2 ist ungültig
>> test.cpp:43: Fehler: Templateargument 1 ist ungültig
>> test.cpp:44: Fehler: Templateargument 2 ist ungültig
>> 
>> Sorry it on german.
>> A testfile for reproducing my problem is attached.
>> Can someone help? thanks..
> 
> This is a fairly recurring question. Please read
> about it at
> 
> http://lists.boost.org/boost-users/2006/12/24042.php
> 
> Is everything clear after reading the above?

Yeah it makes it clear, so i stay with my custom key extractor for now
(until boost 1.34 ;-))

> 
> BTW, what happened to your SIGABRT problem? you
> promised to report back after investigating the
> safe mode and invariant checking macros issue :)

I just want some bigger thrill, until i release my results ;-). No, i just
took somewhat longer than i thought, to make the rest so stable i can test
it. So far i get no problems with the scripts after defining them globally.
But only basic functions are activated at a moment. If i have a real
working piece of code, i will make an answer that my issue is finally
solved. Working as fast as i can ;-)

Greetings
Manuel Jung

> Joaquín M López Muñoz
> Telefónica, Investigación y Desarrollo