Checks if a package is loaded or not

Checks if a package is loaded or not. Note that, contrary to require(), this function does not load the package if not loaded.

# S3 method for default
isPackageLoaded(package, version=NULL, ...)

Arguments

package

The name of the package.

version

A character string specifying the version to test for. If NULL, any version is tested for.

...

Not used.

Value

Returns a logical.

Author

Henrik Bengtsson

See also

To check if a package is installed or not, see isPackageInstalled().