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Check whether an R package is installed

Source: R/general_package_functions.R
package_installed.Rd

A small wrapper function to determine whether a package namespace can be loaded via base::requireNamespace() without attaching the package.

Usage

package_installed(package)

Arguments

package

Character scalar. Package name.

Value

A logical scalar:

  • TRUE: The package is installed and its namespace can be loaded.

  • FALSE: The package is not installed or its namespace cannot be loaded.

Details

The supplied package name is first validated to be a non-missing, non-empty character scalar, then base::requireNamespace() is called with quietly = TRUE.

Author

Ahmed El-Gabbas

Examples

package_installed("stats")
#> [1] TRUE
package_installed("this_package_does_not_exist")
#> [1] FALSE