Sat, 09 Jul 2022

Rcpp 1.0.9 on CRAN: Regular Updates

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The Rcpp team is please to announce the newest release 1.0.9 of Rcpp which hit CRAN late yesterday, and has been uploaded to Debian as well. Windows and macOS builds should appear at CRAN in the next few days, as will builds in different Linux distribution and of course at r2u. The release was prepared om July 2, but it took a few days to clear a handful of spurious errors as false positives with CRAN — this can when the set of reverse dependencies is so large, and the CRAN team remains busy. This release continues with the six-months cycle started with release 1.0.5 in July 2020. (This time, CRAN had asked for an interim release to silence a C++ warning; we then needed a quick follow-up to tweak tests.) As a reminder, interim ‘dev’ or ‘rc’ releases should generally be available in the Rcpp drat repo. These rolling release tend to work just as well, and are also fully tested against all reverse-dependencies.

Rcpp has become the most popular way of enhancing R with C or C++ code. Right now, around 2559 packages on CRAN depend on Rcpp for making analytical code go faster and further, along with 252 in BioConductor. On CRAN, 13.9% of all packages depend (directly) on CRAN, and 58.5% of all compiled packages do. From the cloud mirror of CRAN (which is but a subset of all CRAN downloads), Rcpp has been downloaded 61.5 million times.

This release is incremental and extends Rcpp with a number of small improvements all detailed in the NEWS file as well as below. We want to highlight the external contributions: a precious list tag is cleared on removal, and a move constructor and assignment for strings has been added (thanks to Dean Scarff), and (thanks to Bill Denney and Marco Colombo) two minor errors are corrected in the vignette documentation. A big Thank You! to everybody who contributed pull request, opened or answered issues, or questions at StackOverflow or on the mailing list.

The full list of details follows.

Changes in Rcpp hotfix release version 1.0.9 (2022-07-02)

  • Changes in Rcpp API:

    • Accomodate C++98 compilation by adjusting attributes.cpp (Dirk in #1193 fixing #1192)

    • Accomodate newest compilers replacing deprecated std::unary_function and std::binary_function with std::function (Dirk in #1202 fixing #1201 and CRAN request)

    • Upon removal from precious list, the tag is set to null (Iñaki in #1205 fixing #1203)

    • Move constructor and assignment for strings have been added (Dean Scarff in #1219).

  • Changes in Rcpp Documentation:

    • Adjust one overflowing column (Bill Denney in #1196 fixing #1195)

    • Correct a typo in the FAQ (Marco Colombo in #1217)

  • Changes in Rcpp Deployment:

    • Accomodate four digit version numbers in unit test (Dirk)

    • Do not run complete test suite to limit test time to CRAN preference (Dirk in #1206)

    • Small updates to the CI test containers have been made

    • Some of changes also applied to an interim release made for CRAN on 2022-03-14.

Thanks to my CRANberries, you can also look at a diff to the previous release. Questions, comments etc should go to the rcpp-devel mailing list off the R-Forge page. Bugs reports are welcome at the GitHub issue tracker as well (where one can also search among open or closed issues); questions are also welcome under rcpp tag at StackOverflow which also allows searching among the (currently) 2886 previous questions.

If you like this or other open-source work I do, you can sponsor me at GitHub.

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

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