Vladimir Panteleev Wrote:
> > 2) An empty array is equal to a null pointer. Yikes!
> 
> Could you bring a practical example of where this is a problem?

I had a program that'd make many recursive function calls.  When done at each level, it'd add to an associative array and then return.  Creating an AA and passing it into a function does not work, because an empty AA is null.  Wrapping in another object or using a pointer the the array was needed to fix the issue.