A Guide To Functional Programming

on YouTube ↗25m

" summary

Claims that functional style cuts bugs and makes code easier to test and read, then shows how with concrete JavaScript code: pure versus impure add and random generators, reversing arrays with the spread operator to avoid mutation, transforming lists with Array.map instead of loops, and minimizing side effects instead of console.logging. Demonstrates React by converting class components to React hooks, models state changes as pure Redux reducers, and handles async effects with Redux middleware and API fetch examples like disabling a button during login.

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" chapters (18)

1. 0:00Intro
2. 2:47Basics of Functional Programming
3. 4:10Functional Languages
4. 4:43Javascript: Chimera of Paradigms
5. 5:24BENEFITS OF FUNCTIONAL PROGRAMMING
6. 8:00Arrow Functions FTW
7. 8:18Class Components
8. 9:47Basic Structure
9. 10:08IMPURE FUNCTIONS
10. 12:42NOT A PURE FUNCTION
11. 14:16MUTATED VALUES
12. 15:08IMMUTABLE VALUES
13. 16:00BASIC FUNCTIONS AND LOOPS
14. 16:42HIGHER ORDER FUNCTIONS
15. 19:10React Functional Component
16. 19:38Redux Roducers
17. 20:20Necessary Side Effects
18. 23:49Using Middleware Functions

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