S3327 Loops should be simplified with "LINQ" expressions should not apply for Span

Rules and Languages Report False-positive / False-negative...
1

  • What language is this for?
    C#

  • Which rule?
    S3327 Loops should be simplified with “LINQ” expressions

  • Why do you believe it’s a false-positive/false-negative?
    Because it suggests to use Linq but Linq doesn’t work with spans

Using

  • SonarQube Cloud?

  • How can we reproduce the problem? Give us a self-contained snippet of code (formatted text, no screenshots)

        static bool Contains(ReadOnlySpan<char> source, ReadOnlySpan<char> value)
        {
            foreach(var segment in source.Split(' ')) // <== here
            {
                if (source[segment].Equals(value, StringComparison.OrdinalIgnoreCase))
                {
                    return true;
                }
            }
            return false;
        }

Sonar wants us to write something like

foreach(var segment in source.Split(' ').Where...

which is not supported by Linq

2

Hey there.

Can you double check this ID? I think the rule you’re referring to is S3267.