From: ara.t.howard@...
Date: 2006-07-14T07:32:55+09:00
Subject: Re: challenge

On Fri, 14 Jul 2006, Pit Capitain wrote:

> ara.t.howard@noaa.gov schrieb:
>> On Fri, 14 Jul 2006 Ara.T.Howard@noaa.gov wrote:
>>> 
>>>  OPEN = File.method 'open'
>>> 
>>>  class File
>>>    def self.open(*a) 42 end
>>>    end
>>>  end
>>> 
>>> ## now restore File.open using OPEN - remember that open takes a block...
>> 
>> correction.  start here
>> 
>>   open_m = File.method 'open'
>> 
>>   class File
>>     def self.open(*a) 42 end
>>     end
>>   end
>> 
>> using a const makes it too easy and will accomplish what i need to do.
>
>  class << File; self; end.class_eval do
>    remove_method :open
>  end


wow.  learn something every day!

   ~ > cat a.rb
   class File
     def File.open(*a) 42 end
   end

   p File.open(__FILE__)

   class << File; self; end.class_eval do
     remove_method :open
   end

   p File.open(__FILE__)



   ~ > ruby a.rb
   42
   #<File:a.rb>


i wasn't aware remove_method had this 'stacklike' quality.


regards.


-a
-- 
suffering increases your inner strength.  also, the wishing for suffering
makes the suffering disappear.
- h.h. the 14th dali lama