rlang (version 0.2.2)

is_installed: Is a package installed in the library?

Description

This checks that a package is installed with minimal side effects. If installed, the package will be loaded but not attached.

Usage

is_installed(pkg)

Arguments

pkg

The name of a package.

Value

TRUE if the package is installed, FALSE otherwise.

Examples

# NOT RUN {
is_installed("utils")
is_installed("ggplot5")
# }