Consistent wrapper around data() that forces the promise. This is also a
stronger parallel to loading data from a file.
Usage
read_builtin(x, package = NULL)
Value
An object of the built-in class of x.
Arguments
x
Name (character string) of data set to read.
package
Name of package from which to find data set. By default, all
attached packages are searched and then the 'data' subdirectory (if present)
of the current working directory.