Rcpp 0.11.2

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

A new minor release 0.11.2 of
Rcpp is now
on the CRAN network for
GNU R, and binaries for
Debian have also been uploaded.

The release smoothes a few edges on both the
Rcpp side itself, as well
as on the interaction between
Rcpp and
R which since release 3.1.0 offers a
few new features related to C++11.

Kevin added a couple of neat
extensions related to vectors, a new ListOf templated
list class, as well as a new option to warn on implicit casts. We decided not
to make this option the default as it may be too common in some packages. JJ took
care of a few buglets related to the wonderful Rcpp Attributes. See the NEWS
file section below for details, or the ChangeLog file in the package and on the
Rcpp Changelog page.
Note that the diffstat reported by CRANberries is very large as
Kevin also committed a whitespace cleanup which touched almost all files.

As before, we tested this release by building against all
CRAN packages
which depend upon Rcpp. In fact we did
three such runs leading up to the release. Only one package was blacklisted
(as I currently don’t have CUDA set-up), two had what may be internal errors
or tests which were too restrictive, sixteen suffered from missing packages
or RGL devices — but the remaining 202 packages all built and tested
cleanly. Detailed results of those tests (and the scripts for it) are in the rcpp-logs repo GitHub.

There are a number of other fixes, upgrades and other extensions detailed in
NEWS file extract below, in the ChangeLog file in the package and on the
Rcpp Changelog page.

Changes in Rcpp version 0.11.2 (2014-06-06

  • Changes in Rcpp API:

    • Implicit conversions, e.g. between NumericVector and
      IntegerVector, will now give warnings if you use
      #define RCPP_WARN_ON_COERCE before including the Rcpp
      headers.

    • Templated List containers, ListOf, have been
      introduced. When subsetting such containers, the return is assumed
      to be of type T, allowing code such as
      ListOf x; NumericVector y = x[0] + x[1] + x[2].

    • In a number of instances, returned results are protected and/or cast more carefully.

  • Changes in Rcpp Attributes

    • Trailing line comments are now stripped by the attributes
      parser. This allows the parser to handle C++ source files
      containing comments inline with function arguments.

    • The USE_CXX1X environment variable is now defined by
      the cpp11 plugin when R >= 3.1. Two additional plugins have been
      added for use with C++0x (eg when using g++ 4.6.* as on Windows)
      as well as C++1y for compilers beginning to support the next
      revision of the standard; additional fallback is provided for
      Windows.

    • compileAttributes() now also considers Imports: which
      may suppress a warning when running Rcpp.package.skeleton().

Thanks to
CRANberries, you can also look at a
diff to the previous release.
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

This post by Dirk Eddelbuettel
originated on his Thinking inside the box blog.
Please report excessive re-aggregation in third-party for-profit settings.

To leave a comment for the author, please follow the link and comment on their blog: Thinking inside the box .

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