From: Patrick Gundlach <clr7.10.randomuser@...>
Date: 2005-08-13T02:06:11+09:00
Subject: Re: eval, attr_* like methods

Hello Brian,

> class Object
>   def self.lookup_meth(*args)
>     args.each do | name |
>       eval %(
>       def #{name}
> 	@#{name} ||= '24'
>       end
>
>       def #{name}=(arg)
> 	@#{name} = arg
>       end
>       )
>     end
>   end
> end
>
> class Test
>   lookup_meth :test1, :test2
>
>   def testme
>     p self.test1
>     self.test1 = 42
>     p self.test1
>   end
> end
>
> Test.new.testme
> => 
> "24"
> 42


> Hope that helps,

Yes, it helps! But there are two more questions left: since this
lookup_meth is defined in Ojbect, it might get overridden by another
method definition of the same name, right? Is it possible to move this
definition somewhere 'closer' to my classes? And number two: I have
one variable that I need to check. Example:

  def self.lookup_meth(*args)
    args.each do | name |
      eval %(
      def #{name}
        if @othervar    #  <-----------
          puts "hello"
        end
	@#{name} ||= '24'
      end

Any way to avoid a warning about 'instance variable @othervar not
initialized'?

Thanks so far,

Patrick