A Skeptics guide to functional style javascript
summary
Argues JavaScript is not purely functional but shows concrete, practical techniques: use map/reduce/filter instead of manual for-loops to avoid mutable state and enable chaining; write small named pure functions (e.g., addOne) for readability and reuse; use currying for event handlers to capture an index via closure instead of looping; demonstrates a simple identity monad via bind and points out Promises behave like monads; warns immutability isn’t enforced in JS so these patterns are style choices that make code easier to reason about and test.
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chapters (14)
- 0:00Intro
- 4:27Functional programming
- 8:51Functional style JavaScript
- 11:55The tooling
- 13:34Europe at night
- 14:59Looking at some code
- 17:45Simplifying the code
- 19:06Pure functions
- 21:59Less complexity
- 26:15Immutable
- 30:44Chaining
- 34:31Currying
- 38:48Monads
- 41:33Identity Monad
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