David Abrahams wrote:

Shunsuke Sogame writes:

...

Hi gurus,

I compared Boost.MPL Views... http://www.boost.org/libs/mpl/doc/refmanual/views.html with Boost.Iterator adaptors... http://www.boost.org/libs/iterator/doc/index.html#specialized-adaptors

I think joint_iterator seems missing from Boost.Iterator.

Boost.Iterator isn't meant to include a template for every possible iterator. You can easily build your own joint_iterator using iterator_facade or iterator_adaptor.

...

Is such iterator impossible or prohibited by STL?

Not at all.

Though I'm not sure it is easy for me, I'm trying. It seems to need undocumented parts of zip_iterator. (minimum_traversal_category_in_iterator_tuple) Thanks! -- Shunsuke Sogame