From: Robert Klemme <shortcutter@...>
Date: 2007-07-17T16:54:45+09:00
Subject: Re: What is the fastest way to convert a object?

2007/7/17, Magicloud Magiclouds <magicloud.magiclouds@gmail.com>:
> Robert Klemme wrote:
> > 2007/7/17, Ryan Davis <ryand-ruby@zenspider.com>:
> >>
> >> On Jul 16, 2007, at 22:56 , Magicloud Magiclouds wrote:
> >>
> >> > Class Test
> >> >  def methodA
> >> >    puts(@var1)
> >> >  end
> >> >  def initialize
> >> >    @var1 = 0
> >> >  end
> >> > end
> >> >
> >> > obj = Object.new
> >> > obj.instance_variable_set(:@var1, 2)
> >> >
> >> >
> >> > # Now I want obj to be Test's instance, so I can
> >> > obj.methodA
> >> > # How to do this quickly?
> >>
> >> You don't. Ruby is strongly typed, which means that things don't just
> >> "morph" into other types of things automatically or manually.
> >> Specifically, you can't (without voodoo) set an instance's class.
> >
> > Adding to that: MM, what problem are you trying to solve?
> >
> > robert
> >
> >
> I am using DRb, and I have many data models need to be generated on
> server and sent to client. So I think a smaller object would be better.
> Right?

Maybe, maybe not.  Here are my 0.02 EUR:

1. I'd verify that "large" objects are really an issue
2. I'd make conversion explicit by means ot a #to_xyz method, i.e.
receive an object and invoke obj.to_your_real_stuff on it.

Kind regards

robert