[Rcpp-devel] R vectorisation vs. C++ vectorisation

[Hadley Wickham]

> P.S. I don't think the sugar versions can be made any quicker, because
> they have to allocate intermediate vectors, and do more memory copies.

I don't think they _have_to - my understanding is that the expression
template approach is general enough that you could compile away those
intermediates.  It may be extremely difficult to do though!

Hadley

-- 
RStudio / Rice University
http://had.co.nz/