Wed, 24 Feb 2021

RcppSimdJson 0.1.4 on CRAN: Small Bugfix

A quick note to say that we finalized a bugfix release 0.1.5 of RcppSimdJson yesterday which got onto CRAN earlier today. RcppSimdJson wraps the fantastic and genuinely impressive simdjson library by Daniel Lemire and collaborators. Via very clever algorithmic engineering to obtain largely branch-free code, coupled with modern C++ and newer compiler instructions, it results in parsing gigabytes of JSON parsed per second which is quite mindboggling. The best-case performance is ‘faster than CPU speed’ as use of parallel SIMD instructions and careful branch avoidance can lead to less than one cpu cycle per byte parsed; see the video of the talk by Daniel Lemire at QCon (also voted best talk).

This version brings a small fix to Windows where temporary filenames constructed from URLs (as for example constructed by our td package) need an extra sanization for a possible ‘?’ character. We will be addressing that properly “in due course” but for now a simple gsub() will do. The NEWS entry follows.

Changes in version 0.1.5 (2021-02-23)

  • Temporary filenames from request URLs need an extra path sanitization on Windows as seen with package td.

  • A few #nocov tags were added to the code.

Courtesy of my CRANberries, there is also a diffstat report for this release.

For questions, suggestions, or issues please use the issue tracker at the GitHub repo.

If you like this or other open-source work I do, you can now 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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