[Vala] Null Coalescing Assignment Operator

[Edward Hennessy <ehennes sbcglobal net>]

This snippet shows a common implementation of lazy initialization:

        if (thing == null)
        {
            thing = create();
        }


It would be nice to have a concise form using a null coalescing operator, like:

        thing ??= create();


Would a null coalescing assignment operator be a reasonable addition to Vala?

Ed