Presentations

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Our monthly presentations are recorded and published on Youtube.

 For the list of videos, check out our Youtube channel.

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A Tour of Architectural Abstraction with Objective-S - Wednesday, November 24th

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This month, the UKSTUG will take a look at Objective-S , an architecture-oriented programming language based on Smalltalk and Objective-C, by hosting his creator Marcel Weiher. As per Alan Kay, “Code seems large and complicated for what it does” . Objective-S addresses one source of this accidental complexity: using software architectural abstraction to directly expresses the much wider variety of architectural styles typical of modern software systems, compared to traditional programming languages that still follow the call/return architectural style of scientific programs from the early days of computing. Marcel Weiher started his forays into dynamic object-oriented computing by implementing Objective-C on his Amiga 35 years ago and hasn’t stopped since. Stops on the way have been at Apple, the BBC, Microsoft and various startups, as well as contributing to Squeak. He is currently a principal software engineer at Citymapper and PhD student at HPI, where he is trying to distill some ...
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Javier Pimas -- Live Metacircular Runtimes: The case of Egg Smalltalk - 29 June 2024

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 Egg is a new Smalltalk dialect that was designed from scratch to incorporate some interesting features: A module system with namespaces that replaces the old-good Smalltalk global. Dynamic identifiers, which are bound lazily similarly to how methods are lazily bound. A multi-VM architecture, with different VM implementations written in C++, Pharo, JavaScript and Egg. The Egg-in-Egg VM is special in that the VM component is just another module of the system, creating what we have named Live Metacircular Runtimes (LMRs) [1]. The most interesting characteristic of LMRs in Smalltalk is that they can be developed using standard Smalltalk tools, which shorten feedback loops when doing VM development. During the talk I'll show a little bit about Egg and its LMR, and how not only VM developers get more productive when writing VMs, but also application developers can better understand what the VM does behind the scenes. [1] https://arxiv.org/abs/2312.16973 - Live Objects All Th...
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Nov 22: Michael Lucas-Smith on Xtreams

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In order to welcome Michael Lucas-Smith and Helge Nowak, who will be visiting London this month, we've moved our November monthly meeting one week earlier to Monday, November 22. Michael has offered to give us an in-depth presentation on Xtreams , a streaming framework with a new and refreshingly consistent API. From the project page: Xtreams is a generalized stream/iterator framework providing [a] simple, unified API for reading from different kinds of sources and writing into different kinds of destinations (Collections, Sockets, Files, Pipes, etc). Streams themselves can be sources or destinations as well. This allows to stack streams on top of each other. It is the stacking nature of the streams that give this framework its real power and, from what Michael and Martin (Kobetic) have shown me, you can do some pretty impressive stuff. Martin's presentation at ESUG only scratched the surface, apparently, and Michael intends to delve even deeper. There will also be plenty of ti...
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