On 05/06/2006 05:11 PM, dan marsden wrote:
Larry Evans wrote: [snip]
Also, since the above code is all for a specific structure, i.e. example_struct, why is there any need for including a Struct template parameter. Why not just:
template<int Pos> struct example_struct_iterator : iterator_base<example_struct_iterator<example_struct, Pos> > { BOOST_STATIC_ASSERT(Pos >=0 && Pos < 3); typedef example_struct struct_type; ... };
The Struct parameter allows us to capture whether the iterator points into an example_struct or a const example_struct. Some of the rest of the example code needs to make this distinction. OK, now I see. Thanks.
Thanks for the feedback
Sure. And thanks for the fusion_v2 and the quick response to feedback. However, I've got another question. I removed the value_of_impl from my code since it looks like deref_impl defines what's needed and my code ran OK. Is value_of_impl really needed to define a fusion iterator for a new struct?