From: Paul Brannan <pbrannan@...>
Date: 2003-08-19T04:44:57+09:00
Subject: Re: Question: immutable strings as design goal?

On Tue, Aug 19, 2003 at 04:06:24AM +0900, Dave Thomas wrote:
> Ruby gets around this by dup-ing strings used as Hash keys, so the 
> problem doesn't crop up.

dup-ing and freezing.  It would still be possible to modify the Hash key
if the key were not frozen.

Paul