From: Ryan Davis <ryand-ruby@...>
Date: 2011-09-17T06:12:27+09:00
Subject: Re: Can monkey patching be discovered when you require a library?


On Sep 16, 2011, at 11:39 , Intransition wrote:

> 
> 
> On Sep 12, 10:52 pm, Nick Klauer <kla...@gmail.com> wrote:
>> Is it possible to know whether a method, class, or instance was overridden
>> by another when you require 'said_gem' in (i.e. monkeypatched)?  I'm
>> thinking something that would let gem users know if a gem is going to
>> override core methods or attrs?
> 
> Turn on warnings.
> 
>  $ cat t.rb
>  class String
>    def to_s; end
>  end

That doesn't work.

class String
  alias old_to_s to_s
  def to_s; end
end