Nothing
as_unknown_rows <- function(x) {
x <- as_tibble(x)
class(x) <- c("unknown_rows", class(x))
x
}
dim.unknown_rows <- function(x) {
c(NA_integer_, length(x))
}
registerS3method("dim", "unknown_rows", dim.unknown_rows)
head.unknown_rows <- function(x, n) {
head(as.data.frame(x), n)
}
registerS3method("head", "unknown_rows", head.unknown_rows)
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