Lecture 11: Control Flow 3

Info and Materials

• Date: July 31, 2025
• Topics: Writing Loops Part 2
• Slides: View Slides
• Code: No in-class code to download

Learning Objectives

• Use for loops in a data frame
• Identify and apply alternatives to for loops in R, such as map(), across(), and apply()
• Understand when and how to use while loops for condition-based iteration

Before Class

• Review Lecture 10 materials to get ready for today’s in-class quiz
• Bring your laptop to every class

Readings

Skim the readings before or after class to get the big picture and prep for quizzes and assignments:

• “Chapter 26 Iteration” from “R for Data Science” 2nd Edition