Functional Programming in 40 Minutes

on YouTube ↗32m

" summary

Defines functional programming as enforcing pure functions that map inputs to outputs with no side effects, pairing them with persistent data structures (tree-backed, copy-on-write, e.g. 32-wide nodes holding ~1M items cheaply) and pushing real-world effects to small bridges. Clojure solutions use atoms for controlled mutation and queues for ordered side effects. Real example: a 10k-line Clojure web library has 460 pure functions and 21 side-effect bridges, so the codebase is 96% functional and easier to reason about and test.

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" chapters (6)

1. 0:00Intro
2. 1:29Agenda
3. 1:55What is it?
4. 26:20What's it like?
5. 29:15Does it work?
6. 31:21Outro

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