Re: [Boost-users] pointer to member function of multi_index

AMDG Sandeep Gupta wrote:

I am sure this is due to some trivial mistake; the statement to create a pointer member function insert of multi_index container fails in the following code:

typedef multi_index_container< std::pair, indexed_by< ordered_unique, int, &pair::first> > > > mic;

std::pair (mic_index::*fn)(pair) = &mic_index::insert; //compile error

The error is due to mismatch in signature as given in the error: std::pair, ... std::pair, bool>...

If need be I can post full error message. Appreciate any suggestions.

The signature is std::pair (mic_index::*fn)(const pair&); However, it is not usually a good idea to rely on the exact signature of library member functions. For instance, the standard library allows member functions to have extra default arguments. In the case of multi_index, using a reference to const will not always work because multi_index uses call_traits. In Christ, Steven Watanabe