Christophe Dervieux cderv

Modern R Development Guide

This document captures current best practices for R development, emphasizing modern tidyverse patterns, performance, and style. Last updated: August 2025

Core Principles

Use modern tidyverse patterns - Prioritize dplyr 1.1+ features, native pipe, and current APIs
Profile before optimizing - Use profvis and bench to identify real bottlenecks
Write readable code first - Optimize only when necessary and after profiling
Follow tidyverse style guide - Consistent naming, spacing, and structure

This powershell script modifies the Base Image, or the Virtual Hard Disk, which the Windows Sandbox launches upon startup. It will copy the required files to the sandbox and add a registry key which will install them upon startup. By default the script will install the latest stable release of Winget. You can specify to use the latest pre-release with the -PreRelease switch.

When a new version of Winget is released, run this script again to update the installation in the sandbox to the latest version

GPG + Git SSH Authentication and Signing on Windows 10

Introduction

This simple Gist will explain how to settup your GPG key to work for SSH authentication (with Git) and Git commit signing on Windows 10. This may seem straightforward on Linux, but there are certain tweaks needed on Windows.

No Cygwin, no MinGW, no Git Bash or any other Linux emulated environment. This works in pure Windows 10.

Software needed

# installed by winget
winget install PowerShell-Preview
winget install git
git config --global user.name "Christophe Dervieux"
git config --global user.email christophe.dervieux@gmail.com
winget install rstudio
winget install vscode
winget install -e R
winget install Github.GithubDesktop

	#' Flatten copy
	#'
	#' @param from Source directory path.
	#' @param to Destination directory path.
	#'
	#' @return Destination directory path.
	#'
	#' @details
	#' Copy all `.Rmd`, `.qmd`, and `.md` files from source to destination,
	#' rename the `.qmd` and `.md` files with an additional `.Rmd` extension,

	-- This is a sample custom writer for pandoc, using Layout to
	-- produce nicely wrapped output.

	local layout = pandoc.layout
	local text = pandoc.text
	local type = pandoc.utils.type

	local l = layout.literal

	-- Table to store footnotes, so they can be included at the end.

	---
	title: "minidown::mini_document"
	author: "Atsushi Yasumoto"
	date: "`r Sys.Date()`"
	output:
	html_document:
	toc: true
	toc_float: true
	self_contained: false
	pandoc_args: ["--lua-filter", "tabset.lua"]

	-- Render TeX and LaTeX like the `\TeX` and `\LaTeX{}` macros do.
	-- Copyright © 2020 Albert Krewinkel <[email protected]>
	-- License: MIT License

	-- Style inspired by https://tess.oconnor.cx/2007/08/tex-poshlet
	local style = pandoc.RawBlock('html', [[
	<style>
	.tex-logo sub, .latex-logo sub {
	font-size: 100%;
	margin-left: -0.1667em;

	/* rs-theme-name: Idle Eyes */
	/* rs-theme-is-dark: TRUE */
	.ace_gutter {
	background: #3b3b3b;
	color: rgb(153,153,153)
	}
	.ace_print-margin {
	width: 1px;
	background: #555;
	}