What's new in C#? Exciting new features in C# 8.0, 9.0 and 10!

on YouTube ↗59m

" summary

Quick tour of concrete C# changes and how to use them: C# 8, 9 and 10 add nullable reference types with compiler null-state analysis (enabling it plus treat-warnings-as-errors surfaces four real errors in the demo), async streams via IAsyncEnumerable and await foreach that yield items without buffering, and records (immutable, value-equality, deconstructors) plus init-only setters and target-typed new. Notes the runtime ties (.NET Core 3.0 → C# 8, .NET 5 → C# 9, .NET 6 → C# 10), default interface implementations, switch expressions, minimal APIs and file-scoped namespaces.

AI-written summary · about

" chapters (7)

1. 0:00Welcome to C# updates
2. 6:48C# 8.0 new features
3. 13:05Nullable reference types
4. 26:58Async streams in C# 8.0
5. 31:56Records and pattern matching
6. 47:16C# 10.0 features
7. 51:51Future of C#

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