Function reference
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.
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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.
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grade_this() - Grade a student's submission using custom logic
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grade_this_code() - Grade student code against a solution
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debug_this() - Debug an exercise submission
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.result.user.last_value.solution.solution_all.user_code.solution_code.solution_code_all.envir_prep.envir_result.evaluate_result.label.stage.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().
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pass_if_equal()fail_if_equal() - Signal a passing or failing grade if two values are equal
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fail_if_code_feedback() - Signal a failing grade if mistakes are detected in the submitted code
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fail_if_error() - Fail if grading code produces an error
Generate Feedback Messages
Create feedback messages for use in graded() grades or in the exercise checking functions.
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code_feedback()maybe_code_feedback()give_code_feedback() - Provide automated code feedback
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random_praise()random_encouragement()give_praise()give_encouragement() - Random praise and encouragement
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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.
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gradethis_exercise_checker() - A checker function to use with learnr
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gradethis_error_checker() - An error checking function for use with learnr
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mock_this_exercise() - Mock a user submission to an exercise