Helpers for working with data frames

df <- data.frame("label" = c("A", "B"), "number" = 1:10)
delete_data_frame_columns(df = df, column_names = "label")
#>    number
#> 1       1
#> 2       2
#> 3       3
#> 4       4
#> 5       5
#> 6       6
#> 7       7
#> 8       8
#> 9       9
#> 10     10
delete_data_frame_columns(df = df, column_names = "number")
#>    label
#> 1      A
#> 2      B
#> 3      A
#> 4      B
#> 5      A
#> 6      B
#> 7      A
#> 8      B
#> 9      A
#> 10     B
delete_data_frame_columns(df = df, column_names = c("label", "number"))
#> data frame with 0 columns and 10 rows

df <- data.frame("label" = c("A", "B"), "number" = 1:10)
group_data_frame(df = df, by = "label")
#> $A
#>   label number
#> 1     A      1
#> 3     A      3
#> 5     A      5
#> 7     A      7
#> 9     A      9
#> 
#> $B
#>    label number
#> 2      B      2
#> 4      B      4
#> 6      B      6
#> 8      B      8
#> 10     B     10
group_data_frame(df = df, by = "label", keep_by = FALSE)
#> $A
#>   number
#> 1      1
#> 3      3
#> 5      5
#> 7      7
#> 9      9
#> 
#> $B
#>    number
#> 2       2
#> 4       4
#> 6       6
#> 8       8
#> 10     10