From: rickyr <rickyrm978@...>
Date: 2009-10-08T12:55:08+09:00
Subject: Re: How to do explicit copy

On Oct 6, 10:50 pm, Patrick Okui <po...@psg.com> wrote:
> On Oct 6, 2009, at 6:45 PM, rickyr wrote:
>
> > y = x
>
> y = x.dup may be sufficient for you (it does a shallowcopy).
>
> --
> patrick

Thanks, it worked. Now, what are the differences between object#dup
and object#clone. Both doing shallow copy.

Also, when I do this

a = Hash.new
puts(a.id)

Ruby whines no such method existed. The docs mentioned object#id, and
all are descendant of object class. What's wrong? How can I verify
(other than a handful of puts) if indeed two objects do not share the
same data, but each has own copy?

TIA