From: "Keith P. Boruff" <kboruff@...>
Date: 2005-01-27T08:15:56+09:00
Subject: Re: clone and dup

Robert Klemme wrote:

> They do both shallow copy.
> 
> Here's a difference:
> 
>>> s="foo".freeze
> => "foo"
>>> s.frozen?
> => true
>>> s.clone.frozen?
> => true
>>> s.dup.frozen?
> => false

So it looks like the major difference is that clone copies the state of the
original object and dup doesn't? At least in the context of "freeze"? 

> Probably because the path names are modified later on and the implementer
> of find wanted to avoide side effects on the arguments.  Or he wanted to
> make sure that modifications to the argument objects don't affect find()
> as it is likely to run comparatively long compared to other methods.

Got it! Thanks! 

KPB