Re: [Boost-users] [Fusion] fusion::traits::is_sequence <->mpl::is_sequence?

Tobias Schwinger wrote:

...

I guess you have to make sure that mpl::sequence_tag returns fusion::fusion_sequence_tag. An easy way to do it is to add a 'tag' type member.

struct my_seq { typedef fusion::fusion_sequence_tag tag; // ...

Sidenote: Although all Sequences provided by Fusion are MPL Sequences (because of that 'tag' type member), it is possible to /write/ a Fusion Sequence that is not an MPL Sequence by omitting that type member...

That supports my quick theories. For Sohail, who's doing a non-intrusive adaptation, he'll need to specialize the mpl::sequence_tag. Regards, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net