Run one piece of code if Target Markdown mode interactive mode is turned on and another piece of code otherwise.
tar_toggle(interactive, noninteractive)If Target Markdown interactive mode is not turned on,
the function returns the result of running the code.
Otherwise, the function invisibly returns NULL.
Visit <books.ropensci.org/targets/literate-programming.html> to learn about Target Markdown and interactive mode.
Other Target Markdown:
tar_engine_knitr(),
tar_interactive(),
tar_noninteractive()