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testthat 3.3.0

testthat 3.3.0 brings improved expectations with better error messages, new expectations for common testing patterns, and lifecycle changes including the removal of `local_mock()` and `with_mock()`. It also includes a write-up of my experience doing package development with Claude Code

Hadley Wickham

Nov 13, 2025

tidyverse testthat devtools Best Practices Tidyverse Packages

Python Open-Source Developer

Posit is hiring a Python open-source developer to create more data analysis tools

Max Kuhn

Nov 12, 2025

Community Modeling Tidyverse

promises v1.5.0

The latest promises release brings hybrid sync/async execution, OpenTelemetry integration for distributed tracing, and significant performance improvements

Barret Schloerke

Nov 7, 2025

promises Interactive Apps Shiny

pkgdown 2.2.0

The latest version of pkgdown automatically builds markdown files that make it easy for LLMs to use your website

Hadley Wickham

Nov 6, 2025

tidyverse pkgdown Best Practices Tidyverse Packages

tune version 2.0.0

A new version of tune brings significant updates for model tuning and parallel processing

Max Kuhn, Simon Couch, Emil Hvitfeldt, Hannah Frick

Nov 5, 2025

tidyverse tidymodels Machine Learning Postprocessing Parallel Processing Tidyverse Packages

purrr 1.2.0

This release tightens up the package by removing long-deprecated functions, making `map_chr()` and predicate functions more type-safe, and requiring a newer version of carrier to make `in_parallel()` use easier. It also includes performance improvements to `every()`, `some()`, and `none()`, as well as a new getting started vignette

Hadley Wickham

Nov 4, 2025

tidyverse purrr Data Wrangling Tidyverse Packages

stringr 1.6.0

This release deprecates `str_like(ignore_case)` and changes the behaviour of `str_replace_all()` for function replacements. It also introduces `str_ilike()` for case-insensitive SQL-like pattern matching, three new case conversion functions (`str_to_camel()`, `str_to_snake()`, and `str_to_kebab()`), and preserves names in all relevant functions

Hadley Wickham

Nov 4, 2025

tidyverse stringr Data Wrangling Tidyverse Packages

Quarto workshop materials @ posit::conf(2025)

posit::conf(2025) Quarto workshop materials

At posit::conf(2025) we hosted two Quarto workshops: Branded Websites, Presentations, Dashboards, and PDFs with Quarto; and Extending Quarto. The materials from both workshops are freely available for anyone to learn from or use in their own teaching

Charlotte Wickham

Oct 27, 2025

Quarto Publishing Community Quarto Learn Workshop

Cartoon dog wizard wearing blue hat with red band holding magic wand creating HTML and CSS code scrolls in starry night scene.

Quarto Wizard 1.0.0: Democratising Quarto Extension Management

Introducing a game-changing extension for VS Code and Positron that transforms Quarto extensions management with an intuitive GUI for extensions and templates

Mickaël CANOUIL, _Ph.D._

Oct 20, 2025

Quarto Positron Publishing Quarto Vscode Extensions Productivity

Quarto 1.8

Quarto 1.8 improves brand support, introduces brand extensions, adds HTML accessibility checks, and gives access to execution context

Charlotte Wickham

Oct 13, 2025

Quarto Publishing Quarto Quarto 1.8 Releases

ggplot2 styling

This post discusses one function in ggplot2: `theme()`. Find out about the glamour of graphics in this deep-dive article

Teun Van den Brand

Oct 1, 2025

ggplot2 Visualization Tidyverse Packages

plumber2 0.1.0

plumber2, a complete rewrite of plumber, has landed on CRAN, providing a modern, future proof solution for creating web servers in R. Read all about the new features here

Thomas Lin Pedersen

Sep 23, 2025

tidyverse plumber2 Interactive Apps Web Tidyverse Packages

Build Your First LLM App with Shiny for Python or R

In the third and final part of The Shiny Side of LLMs, we'll bring everything together in a polished Shiny app. From covering async, optimizing conversations, to handling loading and errors smoothly. Both Python and R!

Veerle Eeftink - Van Leemput

Sep 15, 2025

Shiny for Python Shiny chatlas ellmer Interactive Apps Shiny

Shiny at posit::conf(2025)

Find Shiny talks and workshops at posit::conf(2025) in Atlanta

Shiny Team

Sep 12, 2025

Shiny for Python Shiny Interactive Apps Shiny

ggplot2 4.0.0

A new major version of ggplot2 has been released on CRAN. Find out what is new here

Teun Van den Brand

Sep 11, 2025

tidyverse ggplot2 Visualization Tidyverse Packages

mirai 2.5.0

mirai - minimalist async evaluation framework for R - brings production-grade parallel and distributed computing to the ecosystem

Charlie Gao

Sep 5, 2025

tidyverse mirai Best Practices Parallelism Tidyverse Packages

Talking to LLMs: From Prompt to Response

In this second part of The Shiny Side of LLMs we get into the fun of actually talking to an LLM. From crafting prompts that get the responses you want, to turning messy outputs into something useful, giving models extra powers with tools, and figuring out what all the chatter really costs

Veerle Eeftink - Van Leemput

Sep 5, 2025

Shiny for Python Shiny chatlas ellmer Interactive Apps Shiny

nanonext 1.7.0

nanonext is a communications and concurrency toolbox that facilitates fast, powerful and reliable data exchange in polyglot data science workflows

Charlie Gao

Sep 2, 2025

tidyverse nanonext Best Practices Tidyverse Packages

ragnar 0.2

ragnar 0.2 introduces a tidy, transparent toolkit for building Retrieval-Augmented Generation (RAG) pipelines in R

Tomasz Kalinowski

Aug 20, 2025

tidyverse ragnar Artificial Intelligence Ai Tidyverse Packages

mall 0.2.0

The mall 0.2.0 update for R and Python introduces support for external LLM providers like OpenAI and Gemini. This version also features parallel processing for R users, the ability to run NLP on string vectors in Python, and a brand new cheatsheet

Edgar Ruiz

Aug 19, 2025

Artificial Intelligence Machine Learning Ai LLM Polars Natural Language Processing Tabular Data