On Tuesday 06 July 2004 01:30, "Aleksey Gurtovoy" <agurtovoy@meta-comm.com> wrote:

Neither 'size1' nor 'num_rows' are generic, though. What you want is something like

    template< int n > size(int_<n>);

The particular int_<n> specializations then can be typedef'ed to something more mnemonic, e.g.

    typedef int_<0> rows;

or even

    extern int_<0> rows;

The lack of this genericity will force you, sooner or later, to resort to code duplication. I believe Vesa made the same point a long time ago... yep: http://thread.gmane.org/gmane.comp.lib.boost.devel/60338.

Aleksey, Thanks for point this out. I had forgotten about Vesa contribution. It seems this is very much a repeat of the discussion you link to. Interestingly uBLAS never did get the generic versions of the functions. Although it gained a set of similar functions for major/minor mappings. Michael -- ___________________________________ Michael Stevens Systems Engineering Navigation Systems, Estimation and Bayesian Filtering http://bayesclasses.sf.net ___________________________________