From: Andrew Wagner <wagner.andrew@...>
Date: 2010-10-25T23:19:55+09:00
Subject: Re: Class eval does not work with self

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No, self is not Xclass inside of add_method. It's the instance of Xclass. If
you made add_method a class method (def self.add_method...), then it should
work as written.

On Mon, Oct 25, 2010 at 10:03 AM, Andy Frank <ridingwithrails@gmail.com>wrote:

> I am experimenting with a test class to figure out why self.class_eval
> does not seem to work.  Please see code below:
>
>  class Xclass
>         def add_method(meth, work)
>          self.class_eval %Q{
>                 def #{meth}
>                         #{work}
>                 end
>                 }
>         end
> end
>
> This throws an error when I call the class like so:
>
> x = Xclass.new
> x.add_method("add", "puts \"Hello World\"")
>
>
> Error:
> rb:3:in `add_method': undefined method `class_eval' for #
> (NoMethodError)
>  from test_dyn.rb:15:in `'
>
>
> The fix has been to change self.class_eval  to Xclass.class_eval.
> Anyone know why this is the case. Shouldn't self work.
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

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