From: "Wolfgang Nádasi-Donner" <wonado@...>
Date: 2007-01-21T00:20:11+09:00
Subject: Re: Minor Change Proposal for Classes 'Object' and 'Method'

Vincent Fourmond schrieb:
> gwtmp01@mac.com wrote:
>> Method#receiver
>> Method#name
>> Method#origin           # module/class with definition of method
>>
>> Kernel#origin(name)     # module/class where named method is found
>>             # via standard method lookup process on the
>>                         # receiver.
>>                         # nil if no matching method found
> 
>   I vote for the last one too !
> 
> 	Vince

An additional method "Kernel#origin(name)" will be helpful, if the method is 
defined as a singleton method for an object, it is difficult to get the 
object_id of the anonymous class, where the method ist defined (I hope this 
sentense is somehow understndable).

The object_id is necessary in comparisons with the result of the call to the 
method of class "Method", that returns the associated class.

Here is some code as an example for the problem (if I didn't make some 
conceptional errors):

class Otto
end
p Otto                                      # => Otto
puts "%x" % Otto.object_id                  # => 1574ecc
otto = Otto.new
puts "%x" % otto.object_id                  # => 1574d96
class <<otto
   p self                                    # => #<Class:#<Otto:0x2ae9b2c>>
   puts "%x" % self.object_id                # => 1574d78
   def hi
     puts "'Hi!' from 'otto'"
   end
end
p otto.class                                # => Otto
puts "%x" % otto.class.object_id            # => 1574ecc
p otto.class.superclass                     # => Object
puts "%x" % otto.class.superclass.object_id # => 15386b6
myottohi = otto.method(:hi)
myottohi[]                                  # => 'Hi!' from 'otto'
p myottohi                                  # => #<Method: #<Otto:0x2ae9b2c>.hi>

Wolfgang N�dasi-Donner