storage -- unbounded_array

Hi folks,

I'm trying to start with boost uBLAS.

My intention is to replace some custom code preserving existing API.

The first goal is to create vector and matrix from a C array.

I've found that Storage concept offers range constructor, however both
bounded and unbounded array storages do not provide it.
http://www.boost.org/doc/libs/1_55_0/libs/numeric/ublas/doc/storage_concept.htm
http://www.boost.org/doc/libs/1_55_0/libs/numeric/ublas/doc/bounded_array.htm
http://www.boost.org/doc/libs/1_55_0/libs/numeric/ublas/doc/unbounded_array.htm

First of all, it is disappointing.  Is there a special purpose for the mismatch?

--
Regards,
Alex