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  3. Foundations of Functional Programming with purrr

Exercise

Finding the problem areas

When you are working with a small list, it might not seem like a lot of work to go through things manually and figure out what element has an issue. But if you have a list with hundreds or thousands of elements, you want to automate that process.

Now you'll look at a situation with a larger list, where you can see how the error message can be useful to check through the entire list for issues.

Instructions

100 XP
  • map() over sw_people and pull out the "height" element.
  • map() over safely() to convert the heights from centimeters into feet.
  • Set quiet = FALSE so that errors are printed.
  • Pipe into transpose(), to print the results first.