Rcpp 0.8.9

November 28, 2010
By

(This article was first published on Thinking inside the box , and kindly contributed to R-bloggers)

A new release 0.8.9 of Rcpp is now available at CRAN and has just been uploaded to Debian. As always, sources are also available from my local directory here.

This release comes a few weeks after the preceding 0.8.8 release and continues with a number of enhancements mostly to what we call Rcpp modules, our even-easier C++/R integration which follow some ideas from Boost.Python. Our corresponding Rcpp-modules vignette has been updated too.

The NEWS entry follows below:

0.8.9   2010-11-27

    o   Many improvements were made to in 'Rcpp modules':

        - exposing multiple constructors

        - overloaded methods

        - self-documentation of classes, methods, constructors, fields and 
          functions.

        - new R function "populate" to facilitate working with modules in 
          packages. 

        - formal argument specification of functions.

        - updated support for Rcpp.package.skeleton.

        - constructors can now take many more arguments.
        
    o   The 'Rcpp-modules' vignette was updated as well and describe many
        of the new features

    o   New template class Rcpp::SubMatrix and support syntax in Matrix
        to extract a submatrix: 
        
           NumericMatrix x = ... ;
        
           // extract the first three columns
           SubMatrix y = x( _ , Range(0,2) ) ; 
        
           // extract the first three rows
           SubMatrix y = x( Range(0,2), _ ) ; 
        
           // extract the top 3x3 sub matrix
           SubMatrix y = x( Range(0,2), Range(0,2) ) ; 

    o   Reference Classes no longer require a default constructor for
        subclasses of C++ classes    

    o   Consistently revert to using backticks rather than shell expansion
        to compute library file location when building packages against Rcpp
        on the default platforms; this has been applied to internal test
        packages as well as CRAN/BioC packages using Rcpp

Thanks to CRANberries, there is also a diff to the previous release 0.8.8:

As always, even fuller details are on the Rcpp Changelog page and the Rcpp page which also leads to the downloads, the browseable doxygen docs and zip files of doxygen output for the standard formats. A local directory has source and documentation too. Questions, comments etc should go to the rcpp-devel mailing list off the R-Forge page

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