From: nobu.nokada@...
Date: 2003-12-04T14:01:34+09:00
Subject: Re: Using Modules as Decorators

Hi,

At Thu, 4 Dec 2003 07:17:07 +0900,
Nathan Weston wrote:
>       def decorate(obj, name)
>         #We have to eval string to avoid scope issues:
>         #class << obj
>         #  alias_method(:orig_name(name), :name)  <-- These variables
>         #                    are substituted through string expansion
>         #end 
>         eval("class << obj\nalias_method(:#{orig_name(name)}, :#{name})\nend")
>       end
        def decorate(obj, name)
          orig = orig_name(name)
          (class << obj; self; end).class_eval {alias_method(orig, name)}
        end

>       #Call the original definition of name on object
>       def call_orig(obj, name, *args)
> 	obj.send(orig_name(name), *args)
>       end
        def call_orig(obj, name, *args, &block)
          obj.__send__(orig_name(name), *args, &block)
        end

-- 
Nobu Nakada