Re: [Boost-users] Boost.multi_index: how to use a member function instead ofoperator<()?

I don't think you can use a method directly (Boost.bind won't work because you need a type, not a functor instance). I would just create a nested functor class to call Object::fn. Here is an example, compiled on Boost 1.38.0, gcc 4.3.2. I would put real code in Object::fn(), though. There may be an MPL metafunction to do the equivalent of what the struct ordering does. # include # include class Object { public: struct FN_INDEX; bool fn(Object const& that) const { return true; } struct ordering : public std::binary_function