Delete a column in a data frame within a list

Question

I made a list out of my dataframe, based on the factor levels in column A. In the list I would like to remove that column. My head is saying lapply, but not anything else :P

Answer 1

If you are tidyverse user there is an alternative solution, which utilizes map function from purrr package.

# Create same sample data as above
myList <- list(A = data.frame(ID = c("A", "A"), 
                              Test = c(1, 1), 
                              Value = 1:2), 
               B = data.frame(ID = c("B", "B", "B"), 
                              Test = c(1, 3, 5), 
                              Value = 1:3))
# Remove column by name in each element of the list
map(myList, ~ (.x %>% select(-ID)))