- Add new port: devel/R-cran-Rcpp

  The Rcpp package provides C++ classes that greatly facilitate
  interfacing C or C++ code in R packages using the .Call() interface
  provided by R.

  Rcpp provides matching C++ classes for a large number of basic R
  data types. Hence, a package author can keep his data in normal R
  data structures without having to worry about translation or
  transfering to C++. At the same time, the data structures can be
  accessed as easily at the C++ level, and used in the normal manner.

  The mapping of data types works in both directions. It is as
  straightforward to pass data from R to C++, as it is it return data
  from C++ to R.

  WWW: http://cran.r-project.org/web/packages/Rcpp/

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