为什么 nameof() 在 Linq 表达式中给出了不明确的调用警告,但当我使用与字符串相同的值时却没有?

Why does nameof() give an ambiguous invocation warning in a Linq expression, but not when I use the same value as a string?

当我升级到 FluentAssertions 4.2.2 时,我收到编译器警告。在下面的代码中,如果我调用 EndsWith(nameof(x)),我会收到一个不明确的调用警告。相反,如果我定义 var foo = nameof(x) 并调用 EndsWith(foo),它会干净地编译。代码在两种情况下都运行正常。

我的问题是为什么会发生这种情况,除了将 nameof() 结果存储在变量中之外,是否有其他解决方法?

[Test]
public void TestLastNamesAreSame()
{
    var original = new MyDTO("fred", "jones");
    var expected = new MyDTO("barney", "jones");

    // this gives an Ambiguous invocation warning
    expected.ShouldBeEquivalentTo(original, o => o
        .Excluding(x => x.SelectedMemberPath.EndsWith(nameof(MyDTO.FirstName))));

    // but when I use a variable holding the same value, it works without warning
    const string nameOfFirstNameField = nameof(MyDTO.FirstName);
    expected.ShouldBeEquivalentTo(original, o => o
        .Excluding(x => x.SelectedMemberPath.EndsWith(nameOfFirstNameField)));
}

public class MyDTO
{
    public string FirstName { get; }
    public string LastName { get; }

    public MyDTO(string firstName, string lastName)
    {
        FirstName = firstName;
        LastName = lastName;
    }
}

您确定这是编译器 error/warning 而不是 ReSharper 警告吗?

如果是前者,CSNNNNerror/warning号是多少?

看过(Resharper: Ambiguous Invocation)