unspecified {vctrs} | R Documentation |
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) vec_unspecified_cast(x, to) ## S3 method for class 'vctrs_unspecified' vec_type2(x, y)
n |
Length of vector |
vec_unspecified_cast()
is a helper to use in your vec_cast()
methods.
See vignette("s3-vector")
for detail.
vec_ptype() vec_ptype(NA) vec_c(NA, factor("x")) vec_c(NA, Sys.Date()) vec_c(NA, Sys.time()) vec_c(NA, list(1:3, 4:5))