The variable 'TempUtf16CodeUnitCountAdjustment' is assigned but its value is never used

The variable 'TempScalarCountAdjustment' is assigned but its value is never used

In member SimdUnicode.UTF8.calculateErrorPathadjust(int, int, byte*, int, int, int), remove the underscores from parameter name start_point (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1707)

In externally visible method 'bool Ascii.IsAscii(string s)', validate parameter 's' is non-null before using it. If appropriate, throw an 'ArgumentNullException' when the argument is 'null'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1062)

Member 'PriorityInCategory' is explicitly initialized to its default value (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1805)

Member 'IsNumeric' is explicitly initialized to its default value (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1805)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

Avoid unnecessary zero-length array allocations. Use Array.Empty<byte>() instead. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1825)