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

on YouTube ↗01h 00m

" summary

Overview of concrete language changes in C# 8–10: enables nullable reference types to surface potential null-reference bugs and recommends enabling them plus treating warnings as errors; adds richer pattern matching (type, property, tuple, deconstruct, recursive); introduces records/record structs, init-only setters and top-level statements; supports async streams (IAsyncEnumerable + yield) for streaming I/O; adds file-scoped namespaces, global usings, default interface methods (library-compatibility use case), and compiler inference for lambdas. Examples compile on .NET Core/.NET 6+, and the talk demos fixing real NREs and streaming file lines without loading whole files.

AI-written summary · about

" chapters (10)

1. 0:00C# evolution overview
2. 3:17C# 7 enabling innovations
3. 7:32C# 8.0 groundbreaking changes
4. 14:08Nullable reference types
5. 27:51Async streams for data
6. 34:34Pattern matching evolution
7. 40:16Records and equality
8. 50:36C# 9-10 productivity
9. 56:13Future of C#
10. 59:46Q&A

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