Exercise

More iteration with purrr

Now you will change each element of a list into a numeric data type and then put it back into the same element in the same list, but instead of using a for loop, you'll use map().

You can use the purrr function map() to more easily loop over a list, and turn the characters into numbers. Instead of having to build a whole for loop, you can use one line of code.

Instructions

100 XP

Check the class of the first element of list_of_df.
Use map() to iterate over list_of_df and change each element of the list into numeric data.
Check the class of the first element of list_of_df.
Print out list_of_df.