CodeRunner

Version: 4.1.1 November 2021

Authors: Richard Lobb, University of Canterbury, New Zealand. Tim Hunt, The Open University, UK.

NOTE: Full documentation, change history and a few sample quizzes containing example CodeRunner questions are available at coderunner.org.nz. There's also a forum there, where you can post CodeRunner questions, such as requests for help if things go wrong, or are looking for ideas on how to write some unusual question type.

Changes since version 4.1.0+

• Question authors can provide students with a 'Stop and read feedback' button that allows them to give up on a question and read whatever feedback the author chooses to provide, such as a hint or a sample answer, etc. Thanks Tim Hunt.

• Administrators can provide a comma-separated list of Jobe servers rather than just a single one. A random one is picked for each job. Thanks Khang Pham Nguyen.

• Question authors using combinator template graders can pass information from one run to the next using a new 'graderstate' attribute in their output json.

• The 'stepinfo' record now includes a 'coderunnerversion' field.

• The Twig sandboxing capability has been turned on for improved security in question authoring.

• Bug fix: if a combinator template grader yielded invalid output on systems using Postgres as the database, the response was an unhelpful message "Stored test results could not be deserialised" rather than the intended explanation of the problem (such as a missing 'fraction' field).

• Various minor refactoring, documentation tweaks, etc.