From: Eric Mahurin <eric_mahurin@...>
Date: 2005-05-01T22:47:11+09:00
Subject: Re: Cloning into an object

> > I read a little more about become.  It looks like it might
> be
> > made standard in ruby at some point.  Will it have the
> above
> > functionality.  Or will it do something like what I think
> the
> > smalltalk "become" does - change all references to the
> > destination object to point to the source object.  I really
> > don't want the reference changes because a) it seems very
> > expensive (search the object space), and b) this would
> cause
> > the object id to change.
> 
> I thought that was the whole point of "become".  Certainly it
> doesn't
> make sense for references to object x to persist in being
> reference to
> object x if object x has "become" object y.  (The idea of
> having this
> in Ruby doesn't appeal to me, but that's my understanding of
> its
> premise, anyway.)


What evil.rb has works great for me.  It should probably be
called "replace" like the methods in Array, Hash, and String. 
evil.rb/become is just a more general form of the replace in
Array, Hash, and String.




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