AA.remove in foreach && AA = new vs cleaning

[Saaa]

Steven Schveighoffer wrote:
>> So, what is the fastest way to clean an AA?
>
> aa = null;
:(
>
> However, if you have multiple copies of the AA, this does not clear out 
> the data.  It merely resets the AA reference.
>
> I'd not trust your code
:)
> because it's undefined behavior.  If you want to  remove all the elements 
> individually, copy the keys to an array, then  iterate over the array 
> removing each element.
This is what the dsource example does, it loops over a copy of all the keys 
:)
foreach(K key; aa.keys)
 aa.remove(key);

>
> Or use a real collection class, such as Tango's or dcollections' and use 
> the clear() method :)
>
> -Steve
As nulling is all it takes I don't think it's that much faster :)