across() in functions: diamonds

diamonds |> summarize_datatypes()
## Rows: 1
## Columns: 10
## $ carat_mean         <dbl> 0.7979397
## $ depth_mean         <dbl> 61.7494
## $ table_mean         <dbl> 57.45718
## $ price_mean         <dbl> 3932.8
## $ x_mean             <dbl> 5.731157
## $ y_mean             <dbl> 5.734526
## $ z_mean             <dbl> 3.538734
## $ cut_n_distinct     <int> 5
## $ color_n_distinct   <int> 7
## $ clarity_n_distinct <int> 8