From: Mario Camou <mcamou@...>
Date: 2009-08-11T22:39:51+09:00
Subject: Re: Destroying related objects doubt ... basic oop question

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On Tue, Aug 11, 2009 at 13:57, 7stud -- <bbxx789_05ss@yahoo.com> wrote:

> Soh Dubom wrote:
> > ex.: let's say we have objects House and Rooms, the relationship between
> > them is composition, so House is responsible for creating new Rooms. If
> > I destroy the instance of House, all instances of Rooms will be
> > destroyed as well,
>
> Really?
>
> class House
>  def initialize(room)
>    @room = room
>  end
> end
>
> class Room
>  def show
>    puts "I'm a room."
>  end
> end
>
> r = Room.new
> h = House.new(r)
> h = nil
>
> r.show
>
> --output:--
> I'm a room.
> --
> Posted via http://www.ruby-forum.com/.
>
> That's not composition. In a composition relationship the House class is
responsible for managing the Room class and you can't pass in a Room to the
House constructor
-Mario.

--
I want to change the world but they won't give me the source code.

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