From: Jim Weirich <jim@...>
Date: 2005-05-29T11:29:08+09:00
Subject: Re: preventing Object#send from dispatching to a global method?

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On May 28, 2005, at 11:42 AM, Francis Hwang wrote:

> Is there a way to prevent Object#send from dispatching to a global  
> method? By which I mean:
>

You could look at how Builder::BlankSlate handles it.  It uses method  
defined hooks to undefine any methods added to any ancestors.  You  
can find BlankSlate in the builder gem.

For example

traken$ irb --simple-prompt
 >> require 'builder/blankslate'
=> false
 >> class Empty < Builder::BlankSlate
 >>  def inspect
 >>   "<empty>"
 >>  end
 >>  def method_missing(sym, *args)
 >>   puts "Calling #{sym}(#{args.join(',')})"
 >>  end
 >> end
=> nil
 >> e = Empty.new
=> <empty>
 >> e.hi
Calling hi()
=> nil
 >> def hi() "HI" end
=> nil
 >> e.hi
Calling hi()
=> nil


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