search_df
counts the number of occurrences of a specified value in
each column of a given data.frame. The output will show the count for each
column that had at least one value matching the search criteria.
search_df(.df, .value)
search_df(Theoph, 1)
#> # A tibble: 2 × 2
#> name n_1
#> <chr> <int>
#> 1 Subject 11
#> 2 Time 3