Names of Duplicate Columns

Source: R/qa.R

Return the column names in a dataframe that contain duplicate values of another column.

duplicated_cols(data)

Examples

library(tidyverse)
test_data <- 
        tibble(
                Group = sample(c("Apple", "Pear"), size = 10, replace = TRUE),
                A     = sample(c(NA_integer_, 1:3), size = 10, replace = TRUE),
                B     = sample(c(NA_integer_, 4:6), size = 10, replace = TRUE),
                C     = sample(c(NA_real_, seq(from = 6.01, to = 6.09, by = 0.01)), size = 10, replace = TRUE),
                D     = sample(c(NA, TRUE, FALSE), size = 10, replace = TRUE)
        ) %>%
        dplyr::mutate(E = B)
        

duplicated_cols(test_data)

#> Error in cols_to_list(data = data): could not find function "cols_to_list"

test_data %>%
        select(-all_of(duplicated_cols(test_data)))

#> Error: could not find function "cols_to_list"