From: "Mikael Høilund" <mikael@...>
Date: 2008-04-25T06:34:56+09:00
Subject: Re: some metaprogramming with define_method


On Apr 24, 2008, at 23:26, Philipp Hofmann wrote:

> Hello,
>
> I was hoping that the following snippet would output
>
>  test_method
>
> instead it raises an 'undefined method'.
>
>
>  module Proxy
>
>    def self.append_features(mod)
>      mod.extend(ClassMethods)
>    end
>
>    module ClassMethods
>
>      def proxy_method(name)
>        self.class.send(:define_method, name) { puts "called #{name}" }
Here you're in class scope; self points to ProxyTest. You in essense  
defined Class.test_method. Remove ".class", and it works.
>
>      end
>
>    end
>
>  end
>
>  class ProxyTest
>
>    include Proxy
>
>    proxy_method :test_method
>
>  end
>
>  proxy = ProxyTest.new
>  proxy.test_method
>
>
> Any hints greatly appreciated.
> g phil
>
>