powered by
This special class can be passed as a ptype in order to specify that the result should be a factor that contains at least the specified levels.
ptype
partial_factor(levels = character())
Character vector of labels.
pf <- partial_factor(levels = c("x", "y")) pf vec_ptype_common(factor("v"), factor("w"), .ptype = pf)
Run the code above in your browser using DataLab