dplyr::tally does not work for data.frame with no columns

[JohnMount]

In attempting to find a good work-around for dplyr issue 3069 I ran into this. If we form a data.frame that happens to have no columns (by dropping a column), then dplyr::tally does not return a count.

suppressPackageStartupMessages(library("dplyr"))
packageVersion("dplyr")
#> [1] '0.7.2.9000'

data.frame(n = as.raw(1:3)) %>% 
  select(-n) %>% tally
#> data frame with 0 columns and 3 rows

[krlmlr]

Thanks, confirmed. Same behavior with summarise(n = n()).

[lock]

This old issue has been automatically locked. If you believe you have found a related problem, please file a new issue (with reprex) and link to this issue. https://reprex.tidyverse.org/