From: "Mauricio Fernández" <batsman.geo@...>
Date: 2003-05-21T19:03:57+09:00
Subject: Re: Copying an Array

On Wed, May 21, 2003 at 05:56:37PM +0900, Robert Klemme wrote:
> 
> You want a deep copy of a nested array structure.  As easy as that:
> 
> module Enumerable
>   def deep_copy
>     map {|x| x.respond_to?( :deep_copy ) ? x.deep_copy : x}
>   end
> end

Try this:

batsman@tux-chan:~/src/ctl$ ruby
 module Enumerable
   def deep_copy
     map {|x| x.respond_to?( :deep_copy ) ? x.deep_copy : x}
   end
 end

 a = []
 b = [a]
 a << b
 p a.deep_copy
^D

==> hangs

It's safer to use Marshal...

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