From: Avdi Grimm <avdi@...>
Date: 2008-02-29T02:10:15+09:00
Subject: Re: Proposed Solutions - Was [ Re: Monkeypatching is Destroying Ruby ]

On Thu, Feb 28, 2008 at 9:39 AM, hemant <gethemant@gmail.com> wrote:
>  My point is, I love open classes, but it shouldn't hurt to have little
>  bit of safety precaution built into the language, does it?

In the mean time, a quick hack: http://pastie.caboo.se/paste/158825

Example:

>> load 'redefine.rb'
=> true
>>
?>   class Module
>>     include Redefine
>>   end
=> Module
>>
?>   class Monkey
>>     def ook_ook
>>         puts "ook ook!"
>> load 'redefine.rb'
=> true
>>
?>   class Module
>>     include Redefine
>>   end
=> Module
>>
?>   class Monkey
>>     def ook_ook
>>         puts "ook ook!"
>>       end
>>   end
=> nil
>>
?>   class Monkey
>>     redefine_method(:ook_ook) { "please, may I have another banana?" }
>>   end
Redefine::MethodRedefinitionError: Method 'ook_ook' redefined
        from (irb):14
>>
?>   Monkey.new.ook_ook
ook ook!
=> nil
>>
?>   Redefine.allow_collisions= :warn
=> :warn
>>
?>   class Monkey
>>     redefine_method(:ook_ook) { "please, may I have another banana?" }
>>   end
Method 'ook_ook' redefined at (irb):22:in `irb_binding'
=> #<Proc:0x00624224@(irb):22>
>>
?>   Monkey.new.ook_ook
=> "please, may I have another banana?"
>>
?>   Redefine.allow_collisions= true
=> true
>>
?>   class Monkey
>>     redefine_method(:ook_ook) { "Look out, I'm in a poo-flinging mood" }
>>   end
=> #<Proc:0x004b0410@(irb):30>
>>
?>   Monkey.new.ook_ook
=> "Look out, I'm in a poo-flinging mood"
>>

-- 
Avdi