Check whether a range is empty

[Gary Willoughby]

On Friday, 13 July 2018 at 18:37:35 UTC, vino.B wrote:
> Hi All,
>
>   How do i check whether a range is empty. eg. 
> (!PFResutl.toRange).empty. I tired the below, but it is no 
> printing Empty if the range is empty it just prints blank line.
>
> if (!(!PFResutl.toRange).empty) { writeln("Empty"); }
>
>
> From,
> Vino.B

I thought every range at the lowest level has an `empty` 
property. So, in this case, it would be:

if (PFResutl.toRange.empty)
{
     writeln("Empty");
}