All About Span: Exploring a New .NET Mainstay
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I love C# and I frequently have a need for high perf. However, unless you need that high perf, don't use Span<T>. Make your code more readable instead.
Is there anything in Span that inhibits readability?
Span<T> is better than Array as it also comes with ReaOnlySpan<T> for a view with readonly array elements; whereas Array is always read/write.