dplyr-n-distinct.md
In duckplyr: A 'DuckDB'-Backed Version of 'dplyr'

n_distinct() generates useful errors

Code
  n_distinct()
Condition
  Error in `n_distinct()`:
  ! `...` is absent, but must be supplied.
Code
  n_distinct(x = 1:4)
Condition
  Error in `n_distinct()`:
  ! Arguments in `...` must be passed by position, not name.
  x Problematic argument:
  * x = 1:4
Code
  n_distinct(mean)
Condition
  Error in `n_distinct()`:
  ! `..1` must be a vector, not a function.