tutorial_options {learnr}

Set tutorial options

Description

Set various tutorial options that control the display and evaluation of exercises.

Usage

tutorial_options(
  exercise.cap = NULL,
  exercise.eval = FALSE,
  exercise.timelimit = 30,
  exercise.lines = NULL,
  exercise.pipe = NULL,
  exercise.blanks = NULL,
  exercise.checker = NULL,
  exercise.error.check.code = NULL,
  exercise.completion = TRUE,
  exercise.diagnostics = TRUE,
  exercise.startover = TRUE,
  exercise.reveal_solution = TRUE
)

Arguments

exercise.cap

Caption for exercise chunk (defaults to the engine's icon or the combination of the engine and " code").

exercise.eval

Whether to pre-evaluate the exercise so the reader can see some default output (defaults to FALSE).

exercise.timelimit

Number of seconds to limit execution time to (defaults to 30).

exercise.lines

Lines of code for exercise editor (defaults to the number of lines in the code chunk).

exercise.pipe

The characters to enter when the user presses the "Insert Pipe" keyboard shortcut in the exercise editor (Ctrl/Cmd + Shift + M). This can be set at the tutorial level or for an individual exercise. If NULL (default), the base R pipe (⁠|>⁠) is used when the tutorial is rendered in R >= 4.1.0, otherwise the magrittr pipe (⁠%>%⁠) is used.

exercise.blanks

A regular expression to be used to identify blanks in submitted code that the user should fill in. If TRUE (default), blanks are three or more underscores in a row. If FALSE, blank checking is not performed.

exercise.checker

Function used to check exercise answers (e.g., gradethis::grade_learnr()).

exercise.error.check.code

A string containing R code to use for checking code when an exercise evaluation error occurs (e.g., "gradethis::grade_code()").

exercise.completion

Use code completion in exercise editors.

exercise.diagnostics

Show diagnostics in exercise editors.

exercise.startover

Show "Start Over" button on exercise.

exercise.reveal_solution

Whether to reveal the exercise solution if a solution chunk is provided.

Value

Nothing. Invisibly sets knitr::opts_chunk settings.

Examples

if (interactive()) {
  tutorial_options(exercise.eval = TRUE, exercise.timelimt = 10)
}