Prepare

Due: March 7, 2025

Learning objectives

• Explain how R utilizes iteration naturally with vectorized operations
• Iterate across rows in a data frame using across()
• Write anonymous functions for one-time tasks
• Define list objects
• Iterate across list elements using map() functions

Preparations

📖 Read

• R4DS: Chp 26 - Iteration
• (Optional) R4DS: Chp 27 - A field guide to base R
  • We won’t use most of these methods in class, but they can be helpful in case you find code examples in the wild that use them.