From: Samantha Atkins <samantha@...>
Date: 2001-06-11T05:46:07+09:00
Subject: [ruby-talk:16394] Re: other ways to create class instance?

ts wrote:
> 

> 
>    class A
>       attr_accessor :foo, :bar, :baz
>       def initialize(hash)
>          hash.each do |k, v|
>             eval "self.#{k}= #{v}"
>          end
>       end
>    end
> 
>    a = A.new "foo" => 12, "bar" => 24
> 
>

The problem with this is that I want to be able to transparently
persist and recreate any type of object, not just those that
specially define the initialize.  One hack I did was stuffing in
some code like:

class A # sometime when we need to reconstruct instance
alias old_initialize initialize
def initialize(*x)
	if (x[0].type == SpecialSavedState)
		x[0].copyInto(self)
	else
		old_initialize(*x)
	end
end

This sort of worked when done by hand but did not work when I
tried to make it a module to use to extend the class.  

- samantha