This is a partial type used to represent logical vectors
that only contain NA
. These require special handling because we want to
allow NA
to specify missingness without requiring a type.
unspecified(n = 0)
n | Length of vector |
---|
#> Prototype: NULL#> Prototype: logical#> [1] <NA> x #> Levels: x#> [1] NA "2021-04-08"#> [1] NA "2021-04-08 13:23:05 UTC"#> [[1]] #> NULL #> #> [[2]] #> [1] 1 2 3 #> #> [[3]] #> [1] 4 5 #>