[R-pkg-devel] tibbles are not data frames
2017-09-26 13:41 GMT+02:00 Holger Hoefling <hhoeflin at gmail.com>:
Hi Thierry, You write: "If a package requires a data.frame, then it is up to the _user_ to provide a data.frame (and a tibble is not a data.frame). " Actually, as pointed out before, calling is.data.frame on a tibble returns TRUE. So I think that R says - yes, a tibble is a data frame. What would be the point of having a "is.data.frame" function, if you can't trust its answer?
is.data.frame is just a wrapper for inherits(x, "data.frame"). As Daniel pointed out before, inherits(x, "data.frame", TRUE) == 1 returns TRUE for data frames and FALSE for tibbles. I?aki