Tweeted By @hrbrmstr
Want an on-the-fly, nicely-formatted quick reference to all default aes() params supported by #rstats {ggplot2} geoms? @dpseidel's got you covered with this elegant bit of code: https://t.co/0Qpeb3NZDx
— boB 🇷udis (@hrbrmstr) July 11, 2019
That gist entry has at least 4 different R coding/idiom lessons in it. 💙