> No probs - and sorry for the unclear post! Thanks No worries. There are some important points here, some that have been raised repeatedly.
On Thu, Aug 18, 2011 at 7:57 AM, <rcpp-devel-requ...@r-forge.wu-wien.ac.at> wrote: > > R> (1:50)[runif(10,0,20)] > > And I was wondering if I had missed some sugar-type of construct that would > allow me to avoid the explicit 1e7 loop - and instead make use of some Rcpp > vectorised/optimised/ machinery. Christian's sugg' of allowing double->int > did speed things up enough, by me to chuck away the "floor"... A big point here is that loops aren't "bad" in C++ -- the speed penalties are much less if you're using pure C++ within them, not making spurious function calls in them, etc. Sugar is exactly what the name implies -- syntactic sugar that beautifies code. It's not secret turbo-sauce -- that's what the compiler is for. -xian _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
