Since C# 7 there have been a lot of point releases that contain all kinds of goodies. Many of them are performance focused, such as safe stack allocations using Span<T>, or interoperability with improvements to fixed. One that I love, but is not documented well, is some special treatment that ReadOnlySpan<byte> gets when its contents are known at compile time. Here’s an example of a lookup table I used to aide with hex encoding that uses a byte[]: privatestaticbyte[]LookupTable=>newbyte[]{(...
