Re: [Boost-users] [multi_index] function object as key extractor?

Filip Konvi?ka ha escrito:

I've been playing with the problem too, and found this solution...it does not rely on typeof, but it does rely on return_type. I'm a bit unsure about why I had to use "unsigned int" to make it work, so I'd welcome some comments on this.

Do you mean you couldn't use RetType properly? I've tried with the following in GCC 3.2: template struct extract_and_call { typedef RetType result_type; RetType operator()(T const& t) const { return ((t .* MemberPtr) .* MemberFct)(); } }; and everything seems to be working fine. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo