chronometre: A new package (pair) demo for R and Python
Efficient yet simple object exchange between R and Python
https://dirk.eddelbuettel.com/blog/2026/02/08#chronometre_initial_pair
#rstats #rcpp #python #datascience

RcppSpdlog 0.0.26 on CRAN: Another Microfix
Modern C++ logging for R extension packages
https://dirk.eddelbuettel.com/blog/2026/01/16#rcppspdlog_0.0.26
#rcpp #rstats

RcppSpdlog 0.0.25 on CRAN: Microfix
Modern C++ logging for R extension packages
https://dirk.eddelbuettel.com/blog/2026/01/15#rcppspdlog_0.0.25
#rcpp #rstats

RcppSimdJson 0.1.15 on CRAN: New Upstream, Some Maintenance
Highest-performance JSON Parsing via Modern C++ from R
https://dirk.eddelbuettel.com/blog/2026/01/14#rcppsimdjson_0.1.15
#rcpp #rstats

RcppAnnoy 0.0.23 on CRAN: Several Updates
(Very Fast) Approximate Nearest Neighbours for R
https://dirk.eddelbuettel.com/blog/2026/01/12#rcppannoy_0.0.23
#rcpp #rstats

RApiDatetime 0.0.10 on CRAN: Maintenance
Exported C-level API of R for Date + Datetime conversion
https://dirk.eddelbuettel.com/blog/2026/01/11#rapidatetime_0.0.10
#rcpp #rstats

RProtoBuf 0.4.25 on CRAN: Mostly Maintenance
An R interface to Google Protocol Buffers data serialization
https://dirk.eddelbuettel.com/blog/2026/01/11#rprotobuf_0.4.25
#rstats #rcpp

Rcpp 1.1.1 on CRAN: Many Improvements in Semi-Annual Update
Seamless R and C++ Integration
https://dirk.eddelbuettel.com/blog/2026/01/10#rcpp_1.1.1
#rstats #rcpp

/cc @kevinushey

PSA: The long-lived "let us talk about anything and everything" related to #Rcpp mailing list 'rcpp-devel' at R-Forge seems to have moved on to another place where we cannot reach it. May its memory be a blessing. #rstats

Going forward, let's try to connect at this link: https://github.com/RcppCore/Rcpp/discussions

RcppCCTZ 0.2.14 on CRAN: New Upstream, Small Edits
Powerful C++ timezone / datetime library for R
https://dirk.eddelbuettel.com/blog/2026/01/08#rcppcctz_0.2.14
#rstats #rcpp

RcppSpdlog 0.0.24 on CRAN: New Upstream
Modern C++ logging for R extension packages
https://dirk.eddelbuettel.com/blog/2026/01/08#rcppspdlog_0.0.24
#rcpp #rstats

RcppArmadillo 15.2.3-1 on CRAN: Upstream Update
R bindings to powerful and expressive C++ matrix library
https://dirk.eddelbuettel.com/blog/2025/12/17#rcpparmadillo_15.2.3-1
#rcpp #rstats

I found some weird things when calling both #Rstats and #python libraries for #UMAP using {reticulate}. I *think* it has something to do with how c++ libraries, or whatever numerical libraries are used deep down, are linked but I've reached the limits of my statistical computer science literacy.

Wrote it down for posterity and in case some #Rcpp folks are curious:

https://amjdomingues.com/posts/2025-11-25-ump-r-python/

BH 1.90.0-1 on CRAN: New Upstream
Boost C++ header goodness for R
https://dirk.eddelbuettel.com/blog/2025/12/14#bh_1.90.0-1
#rstats #rcpp

RcppQuantuccia 0.1.3 on CRAN: Micro Maintenance
Self-containted QuantLib Calendar Library for R
https://dirk.eddelbuettel.com/blog/2025/11/24#rcppquantuccia_0.1.3
#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
https://dirk.eddelbuettel.com/blog/2025/11/22#rcpparmadillo_15.2.2-1
#rstats #rcpp

New upstream bug fixes, updated OpenMP setup

RcppCNPy 0.2.14 on CRAN: Minor Maintenance
Read/write NumPy data from R
https://dirk.eddelbuettel.com/blog/2025/11/03#rcppcnpy_0.2.14
#rstats #rcpp

RcppArmadillo 15.2.0-0 on GitHub: New Upstream, Simpler OpenMP
R bindings to powerful and expressive C++ matrix library
https://dirk.eddelbuettel.com/blog/2025/10/20#rcpparmadillo_15.2.0-0
#rcpp #rstats

GitHub-only release skipping CRAN to slow the update cadence per CRAN Policy

qlcal 0.0.17 on CRAN: Regular Update
QuantLib Business / Exchange Calendaring for R
https://dirk.eddelbuettel.com/blog/2025/10/14#qlcal-r_0.0.17
#rstats #rcpp

RcppSpdlog 0.0.23 on CRAN: New Upstream
Modern C++ logging for R extension packages
https://dirk.eddelbuettel.com/blog/2025/10/12#rcppspdlog_0.0.23
#rcpp #rstats