encode(x, ...)decode(x, ...)
# S3 method for default
encode(x, ...)
# S3 method for d_label
encode(x, ...)
# S3 method for default
decode(x, ...)
# S3 method for d_label
decode(x, ...)
# S3 method for d_label
rep(x, ...)
# S3 method for d_label
[(x, i, ..., drop = TRUE)
# S3 method for d_label
[[(x, i, ..., drop = TRUE)