What is the current point to empty/null associative arrays?

[Cooler]

On Friday, 29 November 2013 at 08:48:03 UTC, Chris Cain wrote:
> On Friday, 29 November 2013 at 08:32:12 UTC, Cooler wrote:
>> ...
>
> Try making fill array look more like this:
>
> void fillArray(ref string[int] a) { a[10] = "A"; }
>
> The issue is that an array (and/or associative array) is a 
> value type. Basically, you can look at it as a struct with a 
> pointer (and some extra info). If you don't pass it as a ref 
> then reallocations (such as what happens when you add an item 
> to an empty AA) will cause the two to not point to the same 
> information anymore.

Adding "ref" is not an exit. I show this example only for 
simplicity. In my real example I have to fill different AA base 
on condition:
   string[int] aa1, aa2;
   ...
   auto aaToFill = someCheck ? aa1 : aa2;
   // Then do something with aaToFill

If aa1 is empty it will never be filled.