From: Robert Klemme <bob.news@...>
Date: 2006-03-26T19:53:54+09:00
Subject: Re: Object methods

Eustaquio Rangel de Oliveira J wrote:
> Hello, Robert!
> 
>> I'm not sure what exactly you're after.  Do you mean
>> class String
>>    def says
>>      print "s says: ", self, "\n"
>>    end
>> end
>> ?
> 
> Not really, I want to create a new method on the
> object, after it's created, but not on the class. As
> the previous example of
> 
> s = "Testing"
> class <<s
>    def says
>       print "s says: ", self, "\n"
>    end
> end
> 
> where it creates the method (and all that metaclass
> stuff).
> 
> At this point just, just s have the "says" method, not
> the class String or any other String object that was
> created or will be created. Using 
> 
> s.class.class_eval %q(def x.says() puts "x says:"+self
> end)
> 
> have the same effect,

This doesn't work for me.  You define a method "say" for an instance "x" 
  in the scope of the class.  You probably want something else.

 > but what I like to know if there
> is another way to do that. I mean, create a method on
> a specific object (on this case, just "s"), not on the
> class.

def s.says
   puts "I say " + self
end

It would certainly help if you tell us what problem you are trying to solve.

Cheers

	robert