More iteration with for loops

Iteration isn't just for reading in files though; iteration can be used to perform other actions on objects. First, you will try iterating with a for loop.

You're going to change each element of a list into a numeric data type and then put it back into the same element in the same list.

For this exercise, you will iterate using a for loop that takes list_of_df, which is a list of character vector, but the characters are actually numbers! You need to change the character vectors to numeric so that you can perform mathematical operations on them; you can use the base R function, as.numeric() to do that.

Check the class type of the first element of list_of_df.
Build a for loop that takes each element of list_of_df, changes it into numeric data with as.numeric(), and adds it back into the same element of list_of_df.
Check the class type of the first element of list_of_df.
Print list_of_df.

Exercise

More iteration with for loops

Instructions