Make Ruby Functional Again!
summary
Argues Ruby must shift toward functional style to use many cores as Moore’s Law stalls (clock speeds plateaued around 2004 and multi‑core has dominated ~12 years). Refactors an NFL API CLI into small method objects that respond_to :call, replaces hidden base-class state with a lambda fetcher, and turns metadata mutators into pure functions that return frozen hashes. Result is easier testing, safer concurrency and composability; the approach reduces mystery‑guest coupling and groups side effects at the application boundary.
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chapters (7)
- 0:00Introduction and humor
- 3:24Moore's law and Ruby's problem
- 10:27Refactoring the NFL API wrapper
- 17:14Method objects and purity
- 20:51Pure functions in Ruby
- 26:10Key takeaways and future
- 31:39Q&A and closing
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