C#’s Functional Journey

on YouTube ↗01h 01m

" summary

C# evolves from delegates to modern features: generics (C#2) brings parametric polymorphism and removes casts; yield return introduces lazy generators but can re-evaluate sequences; C#3 adds lambdas, extension methods and LINQ expression trees plus IQueryable so entire queries translate to SQL at runtime; later versions add async influenced by F#, then pattern matching and switch expressions replace many virtual-method idioms; records, init-only setters and with-expressions provide value semantics, non‑destructive mutation and built‑in equality.

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" chapters (11)

1. 0:00C#'s functional evolution
2. 1:05C# 1 and delegates
3. 7:31Generics in C# 2
4. 17:20Generators in C# 3
5. 22:06LINQ in C# 3
6. 38:28C# 4 and dynamic
7. 39:10Async from F# in C# 5
8. 41:15Pattern matching vs virtual methods
9. 47:16Switch expressions and patterns
10. 52:11Immutability and records in C#
11. 58:33Summary and limits

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