How can I remove all duplicates so that NONE are left in a data frame?

Question

There is a similar question for PHP, but I\'m working with R and am unable to translate the solution to my problem.

I have this data frame with 10 rows and 50 column

Answer 1

A possibility involving dplyr could be:

df %>%
 group_by_all() %>%
 filter(n() == 1)

Or:

df %>%
 group_by_all() %>%
 filter(!any(row_number() > 1))