check_packages_installed: Check that packages are installed, without loading them
In mlr3misc: Helper Functions for 'mlr3'

View source: R/check_packages_installed.R

check_packages_installed

R Documentation

Check that packages are installed, without loading them

Description

Calls find.package() to check if the all packages are installed.

Usage

check_packages_installed(
  pkgs,
  warn = TRUE,
  msg = "The following packages are required but not installed: %s"
)

Arguments

`pkgs`	(`character()`) Packages to check.
`warn`	(`logical(1)`) If `TRUE`, signals a warning of class `"packageNotFoundWarning"` about the missing packages.
`msg`	(`character(1)`) Format of the warning message. Use `"%s"` as placeholder for the list of packages.

Value

(logical()) named with package names. TRUE if the respective package is installed, FALSE otherwise.

Examples

check_packages_installed(c("mlr3misc", "foobar"), warn = FALSE)

# catch warning
tryCatch(check_packages_installed(c("mlr3misc", "foobaaar")),
  packageNotFoundWarning = function(w) as.character(w))

mlr3misc documentation built on June 25, 2024, 1:07 a.m.