Creating objects from a template

ruby-talk
1

Lähettäjä: nobu.nokada@softhome.net
Aihe: Re: Creating objects from a template

Hi,

At Sat, 12 Feb 2005 13:16:23 +0900,
E S wrote in [ruby-talk:130578]:
> > my_new_unit = types["Panzer"].new.extend(Unit) # As later
>
> I thought #extend only works for instance methods, not variables?

extend_object module method will be called.

  module Unit
    def self.extend_object(obj)
      super
      obj._unit_initialize
    end
  end

Yep, sure enough it seems to work (which is obviously a very good
thing)! I'm relying on ruby-doc.org from work and looks like the
source doc they're using is outdated/incorrect/inaccurate:

obj.extend:
Adds to obj the instance methods from each module given as a
parameter.

mod.extend_object:
Extends the specified object by adding this module’s constants and
methods (which are added as singleton methods).

--
Nobu Nakada

Thanks!

E