In msperlin/afedR: Data and Functions for Book "Analyzing Financial and Economical Data with R"

# no datageneration

Question

Every time the user installs an R package, all package files are stored locally in a specific directory of the hard disk. Using command Sys.getenv('R_LIBS_USER') and list.dirs, list all the directories in this folder. How many packages are available in this folder on your computer?

Solution

r_pkg_folder <- Sys.getenv('R_LIBS_USER')

available_dirs <- list.dirs(r_pkg_folder, recursive = FALSE)
n_dirs <- length(available_dirs)

cat(paste0('There are ', n_dirs, ' folders available  at "', r_pkg_folder, '".'))

Meta-information

extype: string exsolution: r mchoice2string(c(TRUE, FALSE, FALSE, FALSE, FALSE), single = TRUE) exname: "install pkgs" exshuffle: TRUE

msperlin/afedR documentation built on Sept. 11, 2022, 9:49 a.m.