Hi Romain,
I considered the implicit use of Rcpp::as<>() inside of the arma::mat()
constructor. My target was to reuse memory and try to use a very simple
setting, i.e. (at least in my opinion) not too much lines of code.
You answered to my question
"On the other side I then assume, that the
I'm pretty the sure the Rcpp / RcppArmadillo way is to reuse memory
whenever the types match between the as'ed containers, and copy if type
coercion makes sense. Ie, an R integer vector --> an Rcpp IntegerVector
would reuse the same memory, while an R integer vector --> an Rcpp
NumericVector would
On 8 June 2013 at 12:48, Kevin Ushey wrote:
| I'm pretty the sure the Rcpp / RcppArmadillo way is to reuse memory whenever
| the types match between the as'ed containers, and copy if type coercion makes
| sense. Ie, an R integer vector --> an Rcpp IntegerVector would reuse the same
| memory, while
Simon,
You (in my eyes needlessly) complicate matters further with the S4 wrapping.
The base case is simple, shown/used in src/fastLm.cpp right in the middle of
RcppArmadillo and discussed a million times:
extern "C" SEXP fastLm(SEXP Xs, SEXP ys) {
try {
Rcpp::NumericVector yr(ys);
