From: Trans <transfire@...>
Date: 2005-10-26T23:42:03+09:00
Subject: Keeping the Sabbath (more thoughts on meta-coding)

Previously I entertained a Meta module, or using ObjectSpace for these
meta-coding commands. But thats a bit wordy. Today I thought about how
these specific commands are kind of sacred. Then I thought global vars
are kind of like that too. So:

  $id = lambda{ |obj| Kernel.instance_method(:object_id).bind(obj).call
}
  $class = lambda{ |obj| Kernel.instance_method(:class).bind(obj).call
}
  $dup = lambda{ |obj| Kernel.instance_method(:dup).bind(obj).call }

  class X
    def object_id ; "sabatoge" ; end
    def class ; "sabatoge" ; end
    def dup ; "sabatoge" ; end
  end

  x = X.new

  p x.object_id
  p x.class
  p x.dup

  p $id[x]
  p $class[x]
  p $dup[x]

It's concise and we avoid keywords and cluttering the object's method
namespace.

You thoughts on "holy" commands?

T.