Function reference • gradethis

Setup gradethis To use gradethis in your learnr tutorial, you only need to load the gradethis package. Still, you can use `gradethis_setup()` to change the default values of many of the exercise checking or grading function arguments.
`gradethis_setup()`	Setup gradethis for use within learnr
Exercise Checking Functions Choose one of these functions to use in the `*-check` chunk of your exercise.
`grade_this()`	Grade a student's submission using custom logic
`grade_this_code()`	Grade student code against a solution
`debug_this()`	Debug an exercise submission
`.result` `.user` `.last_value` `.solution` `.user_code` `.solution_code` `.envir_prep` `.envir_result` `.evaluate_result` `.label` `.engine`	Checking environment objects for use in `grade_this()`
Signal A Final Grade Helper functions to create and signal a final grade when used in custom checking logic in `grade_this()`.
`graded()` `pass()` `fail()`	Signal a final grade for a student's submission
`pass_if_equal()` `fail_if_equal()`	Signal a passing or failing grade if two values are equal
`pass_if()` `fail_if()`	Signal a passing or failing grade if a condition is TRUE
`fail_if_code_feedback()`	Signal a failing grade if mistakes are detected in the submitted code
Generate Feedback Messages Create feedback messages for use in `graded()` grades or in the exercise checking functions.
`code_feedback()` `maybe_code_feedback()` `give_code_feedback()`	Provide automated code feedback
`random_praise()` `random_encouragement()` `give_praise()` `give_encouragement()`	Random praise and encouragement
`pipe_warning()`	Inform the user about how gradethis interprets piped code
Helper Functions and Utilities These functions are used by gradethis to work within learnr tutorials, or are available to help tutorial authors test their grading logic. Most users of gradethis will not need to use these functions.
`gradethis_exercise_checker()`	A checker function to use with learnr
`gradethis_error_checker()`	An error checking function for use with learnr
`mock_this_exercise()`	Mock a user submission to an exercise