From: walter@...
Date: 2004-07-03T05:38:17+09:00
Subject: Re: define_method to add a Class method?

<snip>

> > I guess I just want to know if it can be done using a define_ 
method
> > or do we _have_ to use eval to add a class method this way.
> 
> Well, I can add a method to that same class I created with an eval,
> this way:
> 
> class MyClass
>   define_method(:my_method2) do
>     print("Hello, world, again!\n")
>   end
> end
> 
> o.my_method2 #=> "Hello, world, again!\n"
> 
> 
>  Sean O'Dell
> 

that does work, but you are adding a method to an instance of the 
class.  I want to add a method to the class itself, and I want to be 
able to do it to an anonymous class.

At this point this is purely academic.  I have a working version, I 
just think there is something I am not understanding as to why I can 
seem to be able to dynamically add a class method.  I can add dynamic 
instance methods fine.

I am looking for the equivalent of 

theClass = Class.new do 
  def self.class_method
    puts "class_method called"
  end
end

theClass.class_method

but using define dynamically (it would really be returning something 
that was passed into the method that is creating the  class)

def create(data)
  Class.new{define_method('self.class_method', lamda{data.dup})}
end

puts create(%w{we made it}).class_method.join(" ")

and get "we made it"

that's the gist of what I am trying to do.  As I said, its purely 
academic at this point, just a curiosity.


Thanks,

Walt
*****************************************************
Walter Szewelanczyk
IS Director
M.W. Sewall & CO.        email : walter@mwsewall.com     
259 Front St.            Phone : (207) 442-7994 x 128
Bath, ME 04530           Fax   : (207) 443-6284
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