From: ara.t.howard@...
Date: 2006-04-11T14:03:43+09:00
Subject: Re: Class Definition inside a method definition?

On Tue, 11 Apr 2006, Bihal wrote:

> Hey guys,
>
> Here's another one, only it's not a singelton
>
>  def self.declare_dndclass(classname,registername)
>    str = <<"EEOOFF"
>        class #{classname} < DragDropRubyObject
>          FormatName = '#{registername}'
>          FormatId = RegisterClipboardFormat.call(FormatName)
>        end
> EEOOFF
>    eval(str)
>    eval("#{classname} ")
>  end
>
> Any thoughts?
>
> Bihal

i don't see a class definition - only some methods being called on 'self',
which happens to be a class here.

eg.

   self.eval str
   self.eval "#{ classname }"

this method could have just have easily been written as

   def self.declare_dndclass cn, rn
     klass =
       Class.new(DragDropRubyObject) do
         FormatName = rn.to_s
         FormatId = RegisterClipboardFormat[FormatName]
       end
     const_set cn, klass
     const_get cn
   end

and here this is also no class definition in the syntactical sense - only the
creation of a class object and a const assignment.

make sense?

-a
-- 
be kind whenever possible... it is always possible.
- h.h. the 14th dali lama