On Wednesday, 22 August 2018 at 13:50:07 UTC, Andrey wrote:
How to test if variable has void value?

string text = void;
if(text == void)
   writeln("Is void");

Tried this:
if(is(text == void))
but doesn't work.

You can't. When using a void initializer the actual value is garbage until initialized properly, and that garbage can look like anything including a valid instance.

So if the flow of your program can't guarantee that the value has been initialized at a certain point, you'll have to track it yourself some way. Nullable may be of help:


Reply via email to