## ----setup, include=FALSE----------------------------------------------------- knitr::opts_chunk$set(echo = TRUE) ## ---- eval = FALSE------------------------------------------------------------ ## packages = installed.packages() ## packages = packages[, "Package"] ## if (!"devtools" %in% packages) { ## install.packages("devtools") ## } ## ---- eval = FALSE------------------------------------------------------------ ## packages = installed.packages() ## packages = packages[, "Package"] ## if (!"remotes" %in% packages) { ## install.packages("remotes") ## } ## ----------------------------------------------------------------------------- devtools::session_info()