"JOAQUIN LOPEZ MU?Z" wrote:

Hi Manuel,

----- Mensaje original ----- De: Manuel Jung 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@lists.boost.org

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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