What's New in C# 9

on YouTube ↗41m

" summary

Covers new features in C# 9 including source generators, improved pattern matching, records, and contextually-typed new(). Also explains lesser-known changes like nullable reference type adjustments, contextually-typed conditional expressions, skip initialization of local variables, native integer types, and function pointers, and mentions pending features (parameter null-check syntax and covariant return types). Examples show which additions are syntactic sugar and which enable new scenarios.

AI-written summary · about

" chapters (9)

1. 0:00Introduction
2. 3:44Records in C# 9
3. 11:05Init-only properties
4. 14:37Pattern matching improvements
5. 20:35Nullable reference types
6. 27:09Convenience and optimizations
7. 32:05Top-level statements and covariance
8. 34:55Low-level optimizations
9. 40:09Q&A

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