assert_packages: Assert that packages are loaded
In vegawidget/vegablock: Provides an Interface between Vega and Blocks

Description Usage Arguments Value See Also Examples

This function can be useful in writing package functions that use functions from packages that you "suggest". It asserts that these packages are available, and throws an informative error for those packages that are not.

1	assert_packages(packages, ...)

`packages`	`character` vector of package names to check
`...`	`character` package names to check

logical indicating success

R Packages book

## Not run: 
  # put packages in a character vector
  assert_packages(c("base", "utils"))

  # or by themselves
  assert_packages("base", "utils")


## End(Not run)