Check if Specific Package is Installed — try_require • lares

This function checks library dependencies

Usage

try_require(package, stop = TRUE, load = TRUE, lib.loc = NULL, ...)

Arguments

package: Character. Name of the library
stop: Boolean. Stop if not installed. If FALSE and library is not available, warning will be shown.
load: Boolean. Load library?
lib.loc: Character vector. Location of R library trees to search through, or NULL. The default value of NULL corresponds to all libraries currently known to .libPaths(). Non-existent library trees are silently ignored.
...: Additional parameters.

Value

No return value, called for side effects.

See also

Other Tools: autoline(), bind_files(), bring_api(), chr2num(), db_download(), db_upload(), export_plot(), export_results(), files_functions(), font_exists(), formatColoured(), formatHTML(), get_credentials(), glued(), grepm(), h2o_selectmodel(), haveInternet(), image_metadata(), importxlsx(), ip_data(), json2vector(), list_cats(), listfiles(), mail_send(), markdown2df(), move_files(), msplit(), myip(), quiet(), read.file(), statusbar(), tic(), updateLares(), warnifnot(), what_size()

Examples

# Check if library base is installed. If not, stop and show error
try_require("base", stop = TRUE)
# Check if library xxx is installed. If not, show warning
try_require("xxx", stop = FALSE)
#> Warning: Package 'xxx' recommended. Install for better results.