Performance features in C#
summary
Covers concrete language changes and measurable wins: introduces Span<T> as a zero-allocation unified memory view, adds ref returns/ref locals to avoid copies (benchmarks show ~10x speed on returns), exposes function pointers for cheaper native interop, and adds skip-locals-init to skip needless stack zeroing. Shows a source generator that compiles regex at build time (avoids runtime IL generation), and new interpolated-string handlers that make formatting almost 2x faster with 80% fewer allocations.
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chapters (17)
- 0:00Intro
- 0:54Who am I
- 1:14Performance in C
- 6:25C Sharp 7
- 7:20Apis
- 11:28Ref and ReadOnly
- 13:28Ref
- 20:16Benchmark
- 22:05Skip locals in it
- 24:11Function pointers
- 24:38Native interop
- 27:15Source generators
- 33:17String interpolation
- 37:27Stack allocating
- 42:20Ref fields
- 43:59Other features
- 45:37Questions
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