[Proposal/Discussion] ActualParameterName analogue CallerMemberName

[LarinLive]

Please review the possibility to add new ActualParameterNameAttribute for string parameters. I use the following extension method for null-checking:

/// <summary>
/// Verifies that the value is not null
/// </summary>
/// <typeparam name="T">Type of verifiying value</typeparam>
/// <param name="value">Verifiying value</param>
/// <param name="parameterName">Checking parameter name</param>
/// <returns>Verified value itself</returns>
/// <exception cref="ArgumentNullException" />
public static T IsNotNull<T>(this T value, string parameterName = "") where T : class
{
	if (!ReferenceEquals(value, null))
		return value;
	else
		throw new ArgumentNullException(parameterName);
}

Example of usage:

public MyService(NetworkCredential credentials)
{
	_credentials = credentials.IsNotNull(nameof(credentials));
}

As you see I have to specify nameof(credentials) every time. It would be nice that I will be able to use something likes:

public static T IsNotNull<T>(this T value, [ActualParameterName] string parameterName = "")
...
...
...
_credentials = credentials.IsNotNull();

Great thanks
Anton

[Joe4evr]

Seems like this would be enabled by #287 [CallerArgumentExpression].

[LarinLive]

Thanks, this is what I need