On 07/25/2005 07:16 PM, Larry Evans wrote: [snip]
I can see where this would be useful in forming cross product. If, instead of scalar elements in the tuples, the rows of matrix M1 and columns of matrix M2 were elements of these tuples, then you could simply apply zip_iterator to each of these and then multiply each element of that iterator and then accummulate that with plus and end up with matrix multiply!
Well, this *may* not be the most efficient method for implementing matrix multiply ;) My enthusiasm blinded my common sense. However, I've also got this wild idea that maybe template metaprogramming could maybe transform an matrix multiply expression written this way into a more efficient method. David (Abrahams), does this seem at all possible? I recall you were considering some sort of template library dealing with matrices or linear algebra or something of that sort.