Functional programming for fun and profit!!

on YouTube ↗24m

" summary

Functional techniques translate into concrete Ruby practices: prefer immutable value objects (use dry-struct or the new data class (Ruby 3.2 preview)) so state never surprises, make behavior into pure functions by dependency injection and returning transformed copies instead of mutating, and leverage actor-style concurrency ideas from Elixir/OTP where millions of Elixir processes run lightweightly; Ruby offers Ractors for parallelism but they remain experimental and require immutable data or copying to move objects between reactors.

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" chapters (7)

1. 0:00Start
2. 2:51Programming paradigms
3. 6:34Immutability: Why??
4. 11:01A pure function
5. 18:44Elixir's concurrency model: Actors
6. 20:14Ruby's concurrency abstraction: Ractor
7. 24:03Resources: Functional programming architecture

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