~/talk

Lessons Learned when Converting from APL+Win to Dyalog APL

Talkat DYNA Fall 2025 · 2025-09-29..09-30· [devops-and-delivery]
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METSIM® migrates from APL+Win to Dyalog APL with all core features preserved and most source code converted 100% of source code into a Dyalog workspace; the project takes about 18 months and uses a GitHub repository plus GitHub repository with VSCode workflow for collaboration and rollback. A conversion utility loads and convert APL+Win models in seconds so existing models run unchanged in the new GUI; emulators (DeltaWi/QuadWi) bridge Windows-specific UI code, 32-bit→64-bit yields faster static calculations (roughly 2×) while dynamic UI drawing currently limits some runs.

AI-written summary · about

  1. 0:00Alex and METSIM®
  2. 1:48A brief history of METSIM®
  3. 5:03Migrating the METSIM® GUI
  4. 7:32Timeline of the conversion project
  5. 8:52Using a GitHub repository
  6. 10:21Converting APL+Win to Dyalog
  7. 13:40Using Git and VSCode
  8. 14:52Emulators to run on more platforms
  9. 16:10Why switch to Dyalog?
  10. 22:06Questions
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