From: Andrew Walrond <andrew@...>
Date: 2005-04-29T03:19:25+09:00
Subject: Deep copy?

Is there a deep copy function that I've missed somehow? (dup and clone are 
both shallow copy functions).

E.g. How can I make a deep copy of a Hash?

Ie if
 a=['who'=>'me'],
I want
 b = a.deepcopy
Such that
 b['who'].replace('you')
doesn't result in
 a == ['who'=>'you']

I could do 
 b=YAML::load(YAML::dump(a)
but it reeks of _wrongness_ ;)

Andrew Walrond