From: Roger Pack <rogerdpack2@...>
Date: 2012-05-24T05:20:34+09:00
Subject: Re: Memory-efficient set of Fixnums

> I have to:
> 1) generate a database of a couple dozens of millions of Fixnums
> (ranging from 0 to 2^32 - 1), while avoiding redundancy

google_hash gem may help.