Fri, 12 Feb 2021

RcppSimdJson 0.1.4 on CRAN: New Improvements

Brendan and I are happy to share that a new RcppSimdJson release 0.1.4 arrived on 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 new option to always return list types, tweaks to setting option in the the request and other small improvements. The NEWS entry follows.

Changes in version 0.1.4 (2021-02-12)

  • Support additional headers in fload (Dirk in #60).

  • Enable continuous integration via GitHub Actions using from r-ci repo (Dirk in #61, #62).

  • Add option to always return list to fparse()/fload() (Brendan in #65 closing #64).

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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