C# 8

on YouTube ↗01h 01m

" summary

C# 8 preview shows concrete changes: nullable reference types flip the default to non-nullable by warning-only opt‑in and use ? annotations that travel across assemblies, plus a null‑forgiving postfix operator (!) to suppress warnings; flow analysis recognizes common null checks but has thread/race corner cases and an attribute language for special method null behavior. Pattern matching gains person switch { ... } switch expressions, property/positional/deconstruct patterns, and exhaustiveness checks. Indexes and ranges use ^ and .. for from-end indexing and slicing, useful with Span<T>.

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" chapters (14)

1. 0:00Introduction
2. 4:12Strings
3. 4:37Middle Name
4. 5:12Length
5. 13:49Checking for Null
6. 18:54No Ability
7. 24:48Patterns
8. 35:14Recursive Patterns
9. 41:08Null Patterns
10. 45:47Deconstruction
11. 50:44Variable Declarations
12. 52:31Indexes and Ranges
13. 54:14Range Expressions
14. 57:05Live Code

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