C#'s Functional Journey
summary
A clear version-by-version tour shows C# steadily adopting functional ideas: C#2 adds generics and type inference, C#3 adds lambdas, extension methods and LINQ where lambdas become expression trees that the runtime composes lazily and can translate into SQL (it works — think IQueryable + Entity Framework), C#5 introduces async/await (inspired by monads but redesigned to fit imperative code), Roslyn uses immutable syntax trees, and C#9 adds records with generated with-expressions and value equality to make non‑destructive mutation practical.
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chapters (9)
- 0:00Introduction to C# evolution
- 1:25First-class functions
- 7:31Polymorphism and generics
- 14:28Lazy execution and iterators
- 17:04Query syntax and extensions
- 26:03Database integration
- 34:11Async and immutability
- 37:24Pattern matching
- 49:41Record types and conclusion
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