From: Raphael Bauduin <raphinou@...>
Date: 2004-03-13T22:49:38+09:00
Subject: Object#clone and Object#dup

Hi,

I'd like to duplicate n object, work on the copy, and be sure the original
isn't change at all. How can I do that?

From the pickaxe (example similar to what I'm working on):

class Klass
   attr_accessor :str
end

s1 = Klass.new
=> #<Klass:0x4031ad18>
s1.str = "Hello"
=> "Hello"
s2 = s1.dup
=> #<Klass:0x4030fcb0 @str="Hello">
s2.str[1,4] = "i"
=> "i"

s1.str
=> "Hi"

s2.str
=> "Hi"

I would like that s1.str still returns "Hello". I tried with dup and clone,
with the same result.... What method should I use?

Thanks

Raph