[Rcpp-devel] shallow/deep copy

[Christian Gunning]

On Wed, Aug 31, 2011 at 3:00 AM,
<rcpp-devel-request at r-forge.wu-wien.ac.at> wrote:
>
> Rcpp::NumericVector x = as<Rcpp::NumericVector>(x_);
> std::vector<double> x = as< std::vector<double> >(x_);

Nice clarification of what's going on under the hood, Darren.
For the first case, the above is synonymous with:

  Rcpp::NumericVector x(x_);

If you want a deep copy, you can use:

  Rcpp::NumericVector x(clone(x_));

See the quickref pdf for examples
(http://cran.r-project.org/web/packages/Rcpp/vignettes/Rcpp-quickref.pdf)....
there, "using namespace Rcpp;" is implied throughout unless otherwise
noted.

-xian

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