On Wed, Aug 31, 2011 at 9:29 PM, Gordon Woodhull <gordon@woodhull.com>wrote:
On Aug 31, 2011, at 6:28 PM, Jeffrey Lee Hellrung, Jr. wrote:
Jeff, what method did you use to glue together the various function objects into one?
I'm not sure I understand. I have a single, well-contained family of function objects that do the conversions for me, but within the context of where these conversions are actually used, one could straightforwardly replace the family of types and the corresponding family of function objects used to effect conversions between said types.
I meant, so you have a set of conversion function objects, how do you dispatch to the right one? Or can you just dispatch on a single type in your case?
Yeah, I always convert *to* a specific type within each function object, but the template is parametrized on the "to" type: template< class To > struct convert_functor { typedef To result_type; To operator()(const From1& from) const { ... } To operator()(const From2& from) const { ... } // etc. }; I was hoping that there was a way to paste together a bunch of function
objects as if they were function overloads.
See my other reply. - Jeff