Tidy Evaluation in R

Course Level: Advanced

This is a one-day course comprising of methods for tidy evaluation in R. We introduce the {rlang} package as a way of parsing variables from a data set into a function. Furthermore, we cover environments and function-evaluation in R, to help you understand how the tools in {rlang} work under the hood.

Book: Tidy Evaluation in R

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Course Details

Course Outline
Learning Outcomes
Materials
Prior Knowledge

Course Outline

Modifying user argument in functions calls
Quoting code with quosures
Using quasi quotation

Learning Outcomes

By the end of the course, participants will be able to…

Use the {rlang} operators {{}}, !!, !!! and := to pass variables
Modify user functions using enquo()
Parse and deparse expressions

Materials

Prior Knowledge

This course assumes familiarity with the concepts taught in our {tidyverse} courses. Anyone attending the course should have experience using {dplyr} and {purrr}. Also required, is the ability to construct R functions.

Attendee Feedback

“Extremely good teacher, great explanations, funny examples and very flexible in terms of content and time. I got to know a lot of things, that I did not think were possible.”
“Useful content, Jamie (course facilitator) very willing to provide help and support.”
“Material well presented and delivered”