C# 8 and Beyond
summary
C# 8 adds concrete features with demos and tradeoffs: switch expressions and recursive patterns let code match deconstructed tuples and properties instead of verbose type checks; IAsyncEnumerable implements asynchronous streams (demo streams lines to console — rickroll example works); nullable reference types are opt-in and produce widespread compiler warnings that catch many potential NREs but require library annotation; ranges/indices and Span<T> slice without copying; using declarations auto-dispose at method end; default interface methods allow library evolution without breaking consumers but introduce inheritance complexity.
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chapters (10)
- 0:00Start
- 43:51Target-type new expression
- 44:39default in deconstruction
- 45:02Generic attributes
- 46:11Caller expression attribute
- 47:29Null-conditional await
- 47:54Record Types
- 49:46Declaration expressions
- 50:34Dictionary literals
- 51:03Extension Everything
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