From: Devin Mullins <twifkak@...>
Date: 2007-01-08T09:22:48+09:00
Subject: Re: a most undangerous Hash#store!

Trans wrote:
>   # As with #store but adds the key/value pair
>   # only if the key isn't already in the hash.
Hrm. ActiveSupport has something similar. You can do 
hash.reverse_merge(key => value).

HNTH,
Devin