David Abrahams wrote:

Wouldn't extension be a lot easier if iterator_base and sequence_base took (optional) 2nd arguments that specify the tag? Then you wouldn't need that whole dance that enables tag dispatching (right?)

http://boost-consulting.com/boost/libs/fusion/doc/html/fusion/extension.html...

Good point. There will be more revisions to the extension aspect of Fusion. I too am not quite happy with it -- it's still quite tedious to write your own fully conforming sequences. Thanks for the suggestion. I added this in my notebook. Regards, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net