SearchValues<T> in .NET 8/9 (.NET & C#)

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.NET 8/9 introduces SearchValues to accelerate character‑search loops by replacing per‑call char arrays with a cached, SIMD‑optimized lookup. Developers report dramatic reductions in Gen0 garbage‑collection pressure and CPU cycles when parsing strings containing delimiters like commas, semicolons, or pipes. By storing SearchValues as a static readonly field and using Span.ContainsAny, the runtime leverages vector instructions for bulk scanning, delivering zero‑allocation, high‑throughput performance.
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