More and more software development tools are available in the cloud, with tools like Replit, CodingRooms, GitHub Codespaces, Amazon Web Services Cloud9, JetBrains and Eclipse all offering online tools for developers to code collaboratively in the cloud. Integrated Development Environments (IDEs) which have traditionally been available as “fatter” clients are increasingly available as “thinner” web-based clients running in a browser. These tools can lower some of the barriers to installation and maintenance for their users. What are the strengths and weaknesses of these new tools for teaching introductory programming courses? Join us on Monday 6th February at 2pm GMT to discuss a paper by Phil Hackett and his colleagues at the Open University on this very topic , from the abstract:
This paper discusses a pilot research project, which investigated the use of online collaborative IDEs (Integrated development environments) during a first-year computing degree course. The IDEs used can be described as virtual computing labs because they replicate some of the actions possible in physical computing labs. Students were supported by a tutor with real-time help and feedback provided, whilst they were programming, without being collocated. The use of two different platforms is considered with the benefits and drawbacks discussed. Students and tutors indicated that they would like to use a virtual computing lab approach in the future.
We’ll be joined by the lead author of the paper Phil Hackett, who’ll give us a lightning talk summary of the paper to kick-off our journal club discussion. The paper was presented at Computing Education Practice (CEP) in Durham earlier this month. 
Phil Hackett, Michel Wermelinger, Karen Kear and Chris Douce (2023) Using a Virtual Computing Lab to Teach Programming at a Distance in CEP ’23: Proceedings of 7th Conference on Computing Education Practice Pages 5–8 DOI:10.1145/3573260.3573262
Automatic code generators have been with us a while, but how do modern AI powered bots perform on introductory programming assignments? Join us to discuss the implications of the OpenAI Codex on introductory programming courses on Monday 4th July at 2pm BST. We’ll be discussing a paper by James Finnie-Ansley, Paul Denny, Brett A. Becker, Andrew Luxton-Reilly and James Prather  for our monthly SIGCSE journal club meetup on zoom. Here is the abstract:
Recent advances in artificial intelligence have been driven by an exponential growth in digitised data. Natural language processing, in particular, has been transformed by machine learning models such as OpenAI’s GPT-3 which generates human-like text so realistic that its developers have warned of the dangers of its misuse. In recent months OpenAI released Codex, a new deep learning model trained on Python code from more than 50 million GitHub repositories. Provided with a natural language description of a programming problem as input, Codex generates solution code as output. It can also explain (in English) input code, translate code between programming languages, and more. In this work, we explore how Codex performs on typical introductory programming problems. We report its performance on real questions taken from introductory programming exams and compare it to results from students who took these same exams under normal conditions, demonstrating that Codex outscores most students. We then explore how Codex handles subtle variations in problem wording using several published variants of the well-known “Rainfall Problem” along with one unpublished variant we have used in our teaching. We find the model passes many test cases for all variants. We also explore how much variation there is in the Codex generated solutions, observing that an identical input prompt frequently leads to very different solutions in terms of algorithmic approach and code length. Finally, we discuss the implications that such technology will have for computing education as it continues to evolve, including both challenges and opportunities. (see accompanying slides and sigarch.org/coping-with-copilot/)
James Finnie-Ansley, Paul Denny, Brett A. Becker, Andrew Luxton-Reilly, James Prather (2022) The Robots Are Coming: Exploring the Implications of OpenAI Codex on Introductory Programming ACE ’22: Australasian Computing Education Conference Pages 10–19 DOI:10.1145/3511861.3511863
Git is a widely used version control system that is powerful but complicated. Its complexity may not be an inevitable consequence of its power but rather evidence of flaws in its design. To explore this hypothesis, we analysed the design of Git using a theory that identifies concepts, purposes, and misfits. Some well-known difficulties with Git are described, and explained as misfits in which underlying concepts fail to meet their intended purpose. Based on this analysis, we designed a reworking of Git (called Gitless) that attempts to remedy these flaws.
To correlate misfits with issues reported by users, we conducted a study of Stack Overflow questions. And to determine whether users experienced fewer complications using Gitless in place of Git, we conducted a small user study. Results suggest our approach can be profitable in identifying, analysing, and fixing design problems.