AMDG Robert Dailey wrote:
If you only need to deal with function pointers,
template<class T> void Subscribe(void (*callback)(const packet_t&)) { Subscribe(boost::function<void(const packet_t&)>(callback)); }
What about for function objects?
There is no way to deduce what a function object can be called with since it can have an overloaded operator(). To deal with monomorphic unary function objects that follow the std library conventions, use this: (warning untested.) BOOST_MPL_HAS_XXX_TRAIT_DEF(argument_type); template<class T> typename boost::enable_if<has_argument_type<T> >::type Subscribe(const T& t) { Subscribe(boost::function<void(const typename boost::remove_cv<typename boost::remove_reference<typename T::argument_type>::type>::type&)>(callback)); } In Christ, Steven Watanabe