0th

Percentile

##### 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.

Keywords
package, utilities
##### Usage
# 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.

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