AA implementation question

[Martin Nowak]

On Thu, 08 Mar 2012 06:12:20 +0100, H. S. Teoh <hsteoh at quickfur.ath.cx>  
wrote:

> I'm playing around with writing an AA implementation that doesn't
> require typeinfos to work, using aaA.d as reference. One thing I don't
> quite understand: what's binit used for, and why is it necessary? It
> seems redundant to me, since D always initializes pointer arrays to
> nulls (right?).
>
It's used to avoid extra allocations when only very few buckets are needed.