Day 22: S3, S4, and S7 Object Systems

Create robust object-oriented interfaces with R's object systems.

Pro Tip: Use S3 for simple classes, S4 for complex validation, S7 for modern OOP.
Resources: https://rconsortium.github.io/S7

#rstats #RPackageAdvent2025

Day 22: S3, S4, and S7 Object Systems

Create robust object-oriented interfaces with R's object systems.

Pro Tip: Use S3 for simple classes, S4 for complex validation, S7 for modern OOP.
Resources: https://rconsortium.github.io/S7

#rstats #RPackageAdvent2025

Day 12: README.Rmd Automation

Create dynamic READMEs that stay up-to-date with your code.

Setup:
usethis::use_readme_rmd()

Include these sections:

󠁯•󠁏󠁏 Installation instructions
󠁯•󠁏󠁏 Basic usage example
󠁯•󠁏󠁏 Lifecycle badges
󠁯•󠁏󠁏 Build status badges

Keep it fresh:

# Add to .github/workflows/
- name: Render README
run: Rscript -e 'rmarkdown::render("README.Rmd")'

#rstats #RPackageAdvent2025

Day 15: Snapshot Testing with testthat

Test complex outputs that are hard to specify exactly.

Text snapshots:
test_that("error messages are informative", {
expect_snapshot(my_function(bad_input), error = TRUE)
})

Pro Tip: Review snapshot changes carefully - they capture everything, including whitespace and formatting.

#rstats #RPackageAdvent2025

Day 15: Snapshot Testing with testthat

Test complex outputs that are hard to specify exactly.

Text snapshots:
test_that("error messages are informative", {
expect_snapshot(my_function(bad_input), error = TRUE)
})

Pro Tip: Review snapshot changes carefully - they capture everything, including whitespace and formatting.

#rstats #RPackageAdvent2025

Day 12: README.Rmd Automation

Create dynamic READMEs that stay up-to-date with your code.

Setup:
usethis::use_readme_rmd()

Include these sections:

󠁯•󠁏󠁏 Installation instructions
󠁯•󠁏󠁏 Basic usage example
󠁯•󠁏󠁏 Lifecycle badges
󠁯•󠁏󠁏 Build status badges

Keep it fresh:

# Add to .github/workflows/
- name: Render README
run: Rscript -e 'rmarkdown::render("README.Rmd")'

#rstats #RPackageAdvent2025

Day 7: roxygen2 Advanced Tags and Cross-References 📝

Master documentation with advanced roxygen2 features, with markdown-style writing! 🎯

💡 Pro Tip: Use @inheritDotParams to inherit ... parameter documentation.
📚 Resources: https://roxygen2.r-lib.org

#rstats #roxygen2 #Documentation #RPackageAdvent2025

Day 7: roxygen2 Advanced Tags and Cross-References 📝

Master documentation with advanced roxygen2 features, with markdown-style writing! 🎯

💡 Pro Tip: Use @inheritDotParams to inherit ... parameter documentation.
📚 Resources: https://roxygen2.r-lib.org

#rstats #roxygen2 #Documentation #RPackageAdvent2025

Day 1: usethis - Project Setup Automation 🎯

The usethis package is your best friend for automating repetitive package development tasks! 🤖

💡 Pro Tip: Set up your global options once with usethis::edit_r_profile() to add your name, email, and preferred license.

📚 Resources: https://usethis.r-lib.org
#RPackageDev #RStats #usethis #RPackageAdvent2025 📦

🎄 ANNOUNCEMENT: R Package Development Advent Calendar 2025! 🎄

Starting December 1st, I'm launching a 25-day journey through modern R package development. But this isn't just another tips series - here's why you should follow along 🧵

The Problem: R package development can feel overwhelming. Between documentation, testing, CI/CD, and CRAN submission, there are dozens of tools to learn.

#rstats #RPackageAdvent2025

Day 1: usethis - Project Setup Automation 🎯

The usethis package is your best friend for automating repetitive package development tasks! 🤖

💡 Pro Tip: Set up your global options once with usethis::edit_r_profile() to add your name, email, and preferred license.

📚 Resources: https://usethis.r-lib.org
#RPackageDev #RStats #usethis #RPackageAdvent2025 📦

🎄 ANNOUNCEMENT: R Package Development Advent Calendar 2025! 🎄

Starting December 1st, I'm launching a 25-day journey through modern R package development. But this isn't just another tips series - here's why you should follow along 🧵

The Problem: R package development can feel overwhelming. Between documentation, testing, CI/CD, and CRAN submission, there are dozens of tools to learn.

#rstats #RPackageAdvent2025