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Arguably (pun intended) the presentation that sparked the most debate during the 2024 Shlaer-Mellor Days conference was titled "Zero Duration Timer Idiom and CrossFit Cindy". Cortland Starrett claimed to identify a bug in the Shlaer-Mellor Method and proposed a fix as well as a work-around (until the fix is agreed upon). And if you are a fitness nerd, this is for you!

Zero Duration Timer Idiom and CrossFit Cindy Cortland Starrett uncovers a small problem in the event delivery rules of the Shlaer-Mellor Method. He demonstrates the issue using a model of a CrossFit wo...

In the game of chess, what is the simplest strategy that might win? Can the model be translated into C code? The presentation answers those questions.

Simple Max Advance and Chess Bots in C Cortland Starrett describes his xtUML model entry into the 2024 Chess Modeling Challenge for Shlaer-Mellor Days 2024. This includes the model and the archit...

The 2nd stop on the 2024 Shlaer-Mellor Days world tour was Cheltenham. Dinner and fellowship with others in the systems modeling community.

Shlaer-Mellor Days 2024 Conference is in the books. We enjoyed 6 presentations along with mixing and debating and banter. The first presentation was by Colin Carter who gave a tour of an abstract data model of the game of chess. See it here:

xtUML Chess Data Model Colin Carter has abstracted the problem space of a chess playing robot into a Shlaer-Mellor xtUML class diagram. He gives us a tour at Shlaer-Mellor Days 2024.