Functional programming: Give it a chance!
summary
Explains concrete FP patterns and tools: pure functions for easier testing and referential transparency, higher‑order functions and currying with an ES6 example used to build configurable helpers like a reusable limit function, and chained transforms (map) over arrays. Shows using Ramda and lodash utilities, Immutable.js or Object.freeze plus structural sharing to avoid costly copies, and models error‑safe access with a Maybe monad (wrap user → account → address → province → pick banner). Notes Promise semantics, Fantasy Land spec, a steep mindset shift and tradeoffs with I/O and adoption.
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chapters (15)
- 0:00Introduction
- 1:48Programming paradigms
- 3:54Imperative vs declarative
- 6:22Why functional programming
- 8:49Functional rules
- 10:12Pure functions benefits
- 14:44Higher-order functions
- 15:44Immutable state in JS
- 19:56Currying and uses
- 23:34Currying with multiple params
- 27:26Functors and monads
- 30:21Monads with Promise
- 32:50Maybe monad in code
- 37:07FP learning resources
- 38:32Balancing FP
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