2007/3/26, Richard B. Kreckel <kreckel@ginac.de>:
But back to the original topic: I do hope that the sum-of-matrices evaluation thingie is no reason for despair. Way back, that was a deliberte decision. But maybe it was a mistake to place matrices in the type hierarchy at all. Maybe they would be less confusing if they were not subtypes of basic, managed by ex, but classes standing apart from the rest of the hierarchy. That would duplicate some code, however. From past discussions, my impression is that this idea would have some followers on this list.
At the moment, I think my own alternative would be to write such a matrix class myself. I might also handle general rank r tensors as well if I do that. -- --- Martin Sandve Alnæs PhD student, Cardiac Computations Simula Research Laboratory, Norway