--- In boost@[...].. , Toon Knapen <toon.knapen@[...]..>  wrote:
>  On Thursday 14 March 2002 13:24, you wrote:
>  > On Thursday 14 March 2002 11:37, you wrote:
>  > > Salut,
>  > >
>  > > On Thursday 14 March 2002 11:20, jhrwalter wrote:
>  > > > > BTW, when are you planning to change size1() and size2()
into
>  > > >
>  > > > num_rows and
>  > > >
>  > > > > num_cols (as suggested by Jeremy and IIRC you accepted)
>  > > >
>  > > > Thanks for the reminder ;-) I'm not very happy with this
change, as
>  > > > it breaks the libraries internal naming scheme, but if nobody
>  > > > objects, I'll change this soon.
> 
>  BTW, is there a way to know the dimension of the 'fast changing
index' and
>  the 'slow changing index' ? This might be usefull since the
matrices are
>  templated on their layout (row_major, column_major).
> 
>  toon

There is currently no template magic to define such indices, but I
can imagine, that these could be useful indeed: there are some sparse
matrix related assignments, which are implemented using tag
dispatching over a combination of container type and storage layout.
May be we can eliminate the storage layout there with the aid of your
proprosed iterator classification.

Regards

Joerg