From: Tom Link <micathom@...>
Date: 2009-02-16T14:28:07+09:00
Subject: Re: Iterating a changing Hash under 1.9.1

> > I think modifying a collection while iterating over it is undefined.
> It seems a very poor practice to me.

It shouldn't go into an infinite loop though. IMHO an exception
("modification during iteration" or something like that) would be
nice.