From: "Weirich, James" <James.Weirich@...>
Date: 2004-01-19T23:32:30+09:00
Subject: Re: setting instance variable "dynamically"

> > The following will work with arbitrary objects ...
> >
> >    obj.instance_eval("lambda { |v| @a = v }").call(value)
> 
> Well, you can do it simpler, even if you *want* to use 
> instance_eval.  No need for a lambda:
> 
> irb(main):001:0> class Foo
> irb(main):002:1>  def test(obj)
> irb(main):003:2>   instance_eval("@x=obj")
> irb(main):004:2>  end
> irb(main):005:1> end

I stand corrected.  For some reason I thought that the value of 'obj'
wouldn't be available inside of an instance_eval.  

> > At this point you must be thinking:  "Why don't I just use
> > instance_variable_set?"
> 
> I'd love to see the answer to this question you'd suggest. :-))

The question was meant to be rhetorical, although with the simplification
the choice is less clear.

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