sj-io

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

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

hadley

library(base64enc)
library(RJSONIO)
library(httr)

default_key <- function () {
  key <- Sys.getenv("POSTMARKAPP_API_KEY")
  if (key == "") {
    stop("Either provide key or set envvar POSTMARKAPP_API_KEY", call. = FALSE)
  }
  key