[:] as empty associative array literal, plus warning for null

[Andrei Alexandrescu]

On 7/4/13 3:00 AM, Dicebot wrote:
> I am afraid I don't really follow here. How introducing new array
> literal (and making old one stronger typed) compromises typeof(null)
> features?

If it has a different type, there's unneeded secession. If it has the 
same type, it's arguably useless as one could always write (T[K]).init 
in the rare cases that need disambiguation.

Andrei