Примеры ошибок, обнаруженных с помощью диагностики V3081

V3081. The 'X' counter is not used inside a nested loop. Consider inspecting usage of 'Y' counter.

Entity Framework

V3081 The 'j' counter is not used inside a nested loop. Consider inspecting usage of 'i' counter. EFCore.Specification.Tests ComplexNavigationsQueryTestBase.cs 2393

for (var i = 0; i < result.Count; i++)
{
  var expectedElement = expected
    .Single(e => e.Name == result[i].Name);

  var expectedInnerNames = expectedElement
    .OneToMany_Optional.Select(e => e.Name)
    .ToList();

  for (var j = 0; j < expectedInnerNames.Count; j++)    // <=
  {
    Assert.True
    (
      result[i]
      .OneToMany_Optional.Select(e => e.Name)
      .Contains(expectedInnerNames[i])                  // <=
    );
  }
}

Infer.NET

V3081 The 'r' counter is not used inside a nested loop. Consider inspecting usage of 'c' counter. CommandLine ClassifierEvaluationModule.cs 459

private void WriteAucMatrix(....)
{
  ....
  for (int c = 0; c < classLabelCount; c++)
  {
    int labelWidth = labels[c].Length;

    columnWidths[c + 1] =
      labelWidth > MaxLabelWidth ? MaxLabelWidth : labelWidth;
    for (int r = 0; r < classLabelCount; r++)
    {
      int countWidth = MaxValueWidth;
      if (countWidth > columnWidths[c + 1])
      {
        columnWidths[c + 1] = countWidth;
      }
    }

  ....
}