The Evolution of Object-Oriented Programming

on YouTube ↗32m

" summary

Shows a buggy addOne example where a global mutable counter produces outputs 3 then 4 then null then an exception, then contrasts it with pure functions and referential transparency. Demonstrates builders vs Kotlin/Scala case/data classes and copy() ergonomics, notes lenses as a coming fix for deep updates. Covers ADTs: product tuples and sealed class sum types with exhaustive pattern matching. Explains ad-hoc polymorphism and compiler-filled type classes (Rust cargo run demo succeeds) and a Scala JSON parser that validates and constructs Vehicle instances.

AI-written summary · about

" chapters (10)

1. 0:00Introduction
2. 1:08Cycles in OOP evolution
3. 3:18Immutability and purity
4. 8:15Builders for immutability
5. 11:23Default and named parameters
6. 14:32Functional combinators
7. 16:18Algebraic data types
8. 23:15Ad-hoc polymorphism
9. 28:53Real-world JSON parsing
10. 31:39Q&A and closing

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