check_installed {librarian} | R Documentation |
Check if packages are installed
Description
Check if packages are installed
Usage
check_installed(...)
Arguments
... |
(Dots) Package names as bare names, strings, or a character vector. If left empty, lists all installed packages. |
Value
If dots
is empty, a character vector of all installed packages.
Otherwise, return a named logical vector where TRUE
means the package
is installed.
Examples
## Not run:
check_installed()
#> [1] "addinslist" "antiword" " ape" "assertthat" ...
check_installed(c("utils", "stats"))
#> utils stats
#> TRUE TRUE
check_installed("datasets", "base", fakepkg)
#> datasets base fakepkg
#> TRUE TRUE FALSE
## End(Not run)
[Package librarian version 1.8.1 Index]