Set iterators

[Jason Orendorff]

On Mon, Feb 13, 2012 at 8:03 PM, Mark S. Miller <erights at google.com> wrote:
> Tyler Close previously posted a deterministic hash table implementation,
> with no extra space or time overhead. Before I saw it I thought it
> impossible.

This email went to a small group rather than to es-discuss. It would
be great to open this up and test the performance claims.

-j