Span<T> gives C# ultra-fast, stack-only slicing without copying memory.
Span<char> slice = name.AsSpan(0, 3);
⚡ Why It Matters
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🧠 Zero GC allocations
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🚀 Safe low-level memory access
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📉 Faster parsing, CSV handling, protocol processing
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♻ Ideal for high-throughput APIs
💡 Pro Tip
Combine with ReadOnlySequence<T> for pipelines.