Create Exercise Results — exercise

Create error results from a custom exercise evaluator.

exercise_result_error() is the preferred way to create an error result.

exercise_result_empty() creates an exercise result representing an "empty" output.

exercise_result_timeout() is a short-hand version for the common problem of the R code timing out.

exercise_result(
  feedback,
  html_output,
  error_message,
  timeout_exceeded = FALSE,
  severity
)

exercise_result_error(
  error_message,
  severity = c("error", "warning", "info"),
  timeout_exceeded = FALSE
)

exercise_result_empty(severity)

exercise_result_timeout()

Arguments

feedback	a message to be displayed underneath the code chunk.
html_output	the HTML code to be inserted into the exercise's output container.
error_message	if present, `severity` is set to `error` and the error message is used as feedback.
timeout_exceeded	if `TRUE`, `severity` is set to `error` and the timeout error message is shown.
severity	can be one of `error`, `warning`, or `info`.

Details

The function exercise_result_timeout() uses the correct message configured for the exam (or code chunk).