Code inspection: Replace 'SequenceEqual' with constant pattern

If you deal with parsing of character spans, you probably use MemoryExtensions.SequenceEqual method a lot. C# 11 introduces a shorthand for this kind of checks, enabling you to simply pattern-match spans of characters against string literals with is or switch expressions.

This inspection reports usages of SequenceEqual() in such contexts and helps you upgrade to a more concise syntax.

            
public static bool IsHeader(ReadOnlySpan<char> header)
{
  return header.SequenceEqual("<=HEADER=>");
}

            
public static bool IsHeader(ReadOnlySpan<char> header)
{
  return header is "<=HEADER=>";
}

Last modified: 08 May 2024