Dirk Eddelbuettel

Lecture slides for my 'Data Science Programming Methods' course STAT 447 from this Fall 2021 at U of Illinois are now accessible via stat447.com covering shell (incl sed/awk), markdown, git(hub), sql, lots of #Rstats up to packaging, and Docker. Enjoy!

dang 0.0.17: New Features, Plus Maintenance A collection of a few small helper functions #dang_0.0.17" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/12/1… #rstats

RcppArmadillo 15.2.3-1 on CRAN: Upstream Update R bindings to powerful and expressive C++ matrix library #rcpparmadillo_15.2.3-1" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/12/1… #rcpp #rstats

BH 1.90.0-1 on CRAN: New Upstream Boost C++ header goodness for R #bh_1.90.0-1" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/12/1… #rstats #rcpp

r^4 post #056: Running r-ci with R-devel Adding R-devel to r-ci is a one-liner #056_r-ci_with_r-devel" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/12/1… #rstats #continuousintegration

duckdb-mlpack 0.0.5: Added kmeans, version helpers, documentation Bringing mlpack machine learning to duckdb SQL #duckdb-mlpack_0.0.5" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/12/0… #duckdb #datascience #mlpack Added kmeans, version helpers, documention

tidyCpp 0.0.8 on CRAN: Maintenance Tidy C++ wrapping of the C API for R #tidycpp_0.0.8" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/2… #rstats Mostly maintenance but also keeping up with R-devel changes to the C API reducing its surface

RcppQuantuccia 0.1.3 on CRAN: Micro Maintenance Self-containted QuantLib Calendar Library for R #rcppquantuccia_0.1.3" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/2… #rstats #rcpp Exchange / business calendaring based on QuantLib: initial package, but now `qlcal` is preferred / recommended

RcppArmadillo 15.2.2-1 on CRAN: Upstream Update, OpenMP Updates R bindings to powerful and expressive C++ matrix library #rcpparmadillo_15.2.2-1" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/2… #rstats #rcpp New upstream bug fixes, updated OpenMP setup

digest 0.6.39 on CRAN: Micro Update Compact hash representations of arbitrary R objects #digest_0.6.39" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/1… #rstats Small incremental release addressing two SAN issues revealed only once 0.6.38 was released last week.

r^4 post #055: More Frequent r2u Updates r2u builds fully at GitHub Actions, multiple runs per day #055_more_frequent_r2u" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/1… #rstats #r2u Internal updates allowing for more frequent builds of CRAN binaries for Ubuntu

digest 0.6.38 on CRAN: Several Updates Compact hash representations of arbitrary R objects #digest_0.6.38" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/1… #rstats With special thanks to Carl Pearson, Bill Denney, Thierry Onkelinx, and Sergey Fedorov for contributions to this release.

duckdb-mlpack 0.0.4: Added random forest and logistic regression Bringing mlpack machine learning to duckdb SQL #duckdb-mlpack_0.0.4" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/1… Adds random forest + logistic regression, reworks interface, adds new state variable for verbosity, expands documentation and adds unit tests

RcppCNPy 0.2.14 on CRAN: Minor Maintenance Read/write NumPy data from R #rcppcnpy_0.2.14" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/0… #rstats #rcpp

duckdb-mlpack 0.0.3: macOS binaries, unit tests, more outputs Bringing mlpack machine learning to duckdb SQL #duckdb-mlpack_0.0.3" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/11/0… #duckdb #mlpack

R^4 post #054: Faster r-ci Contimuous Integration via r2u Container Accelerating Continous Integration at GitHub Actions #054_faster_r-ci" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/10/2… #rstats

duckdb-mlpack 0.0.2: mlpack is now a duckdb community extension Bringing mlpack machine learning to duckdb SQL #duckdb-mlpack_0.0.2" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/10/2…

RcppArmadillo 15.2.0-0 on GitHub: New Upstream, Simpler OpenMP R bindings to powerful and expressive C++ matrix library #rcpparmadillo_15.2.0-0" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/10/2… #rcpp #rstats GitHub-only release skipping CRAN to slow the update cadence per CRAN Policy

ML quacks: Combining duckdb and mlpack #ml_quacks_combining_duckdb_mlpack" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/10/1… A 'minimally viable product / demo' of extending @duckdb with #mlpack

qlcal 0.0.17 on CRAN: Regular Update QuantLib Business / Exchange Calendaring for R #qlcal-r_0.0.17" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/10/1… #rstats #rcpp

RcppSpdlog 0.0.23 on CRAN: New Upstream Modern C++ logging for R extension packages #rcppspdlog_0.0.23" target="_blank" rel="nofollow noopener">dirk.eddelbuettel.com/blog/2025/10/1… #rcpp #rstats