Propagators in Clojure
summary
Describes an implementation of the propagator model as the propaganda library for Clojure and ClojureScript, with cells that hold values, propagators that listen and write, and custom value types like intervals. Builds a browser demo of the barometer/building-height problem where fall-time gives 41–47 m, shadow method 44–48 m and combined interval merging yields 44–47 m. Provides immutable system snapshots, audit trail of updates, backtracking support, JVM/CLJS portability, and throws exceptions on contradictory writes; warns about convergence and performance tradeoffs.
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chapters (10)
- 0:00Start
- 8:20Propagators
- 11:45Values
- 13:17Barometer puzzle
- 20:31Take one
- 23:49STM if you need it
- 24:17Experiments
- 24:41Audit trails
- 26:53Differences
- 28:43Conclusion
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