Getting started with Functional Programming

on YouTube ↗28m

" summary

Shows a concrete refactor: mutable product-list sort that originally calls list.sort becomes a pure function that returns a new copied list, is testable, and can run on another isolate. Uses immutable helpers like KT Dart and the fast_immutable_collections idea plus utilities from dartx (sortedWith, compareBy) and a small higher-order reverse function to flip comparators. Result is fewer branches, easy extension by map lookup, and deterministic, cacheable behavior.

AI-written summary · about

" chapters (9)

1. 0:00Introduction to talk
2. 1:53Pure functions basics
3. 5:06Functions in functional programming
4. 9:00Immutable data structures
5. 13:18First-class and higher-order functions
6. 20:20Functional Dart solution
7. 24:16Dart team's functional future
8. 27:02Recap and conclusion
9. 28:06Q&A session

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