weakref
These options will be used on objects of type weakref
. weakref
objects
are rarely encountered and there is no base R function to create them. However
rlang has a new_weakref
function that we can use.
opts_weakref(constructor = c("new_weakref"), ...)
An object of class <constructive_options/constructive_options_array>
String. Name of the constructor.
Additional options used by user defined constructors through the opts
object