From: 7stud -- <bbxx789_05ss@...>
Date: 2007-11-26T14:43:36+09:00
Subject: Re: module_eval is an instance method?

Paul McMahon wrote:
> module_eval is a instance method of Module.
> 
> It is available to anything that is a Module.
> 
> irb(main):001:0> Object.is_a?(Module)
> => true
> irb(main):002:0> String.is_a?(Module)
> => true
> irb(main):003:0> self.is_a?(Module)
> => false

Ok, how do you explain this output:

def meth1
  Object.module_eval('num')
end

num = 10
Object.module_eval('num')
-->10

meth1
-->
`module_eval': undefined local variable or method `num' for Object:Class 
(NameError)

According to pickaxe2, p. 393:

"When we define methods, we're actually creating (private) instance 
methods for class Object."

What about top level variables?



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