Tidy Evaluation in R
Course Level: Advanced (6 hours)
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
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
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.
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