Re: Composition instead of inheritance

From	Ben Finney <ben+python@benfinney.id.au>
Newsgroups	comp.lang.python
Subject	Re: Composition instead of inheritance
References	<mailman.946.1304010200.9059.python-list@python.org> <d34a5410-42a1-44f6-91b4-32853ae55aca@glegroupsg2000goo.googlegroups.com> <mailman.981.1304049540.9059.python-list@python.org>
Date	2011-04-29 14:14 +1000
Message-ID	<87fwp1k82b.fsf@benfinney.id.au> (permalink)
Organization	Unlimited download news at news.astraweb.com

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Dan Stromberg <drsalists@gmail.com> writes:

> On Thu, Apr 28, 2011 at 3:35 PM, Carl Banks <pavlovevidence@gmail.com> wrote:
> > That's not what we mean by composition.  Composition is when one
> > object calls upon another object that it owns to implement some of
> > its behavior.  Often used to model a part/whole relationship, hence
> > the name.
>
> It's a pretty old idea, that seems to be getting revived in a big way
> all of a sudden. Perhaps the Java people just rediscovered it?

I think it's more that people keep re-discovering how irredeemably messy
multiple inheritance is, and finding that object composition is better
in most cases :-)

-- 
 \      “There's a fine line between fishing and standing on the shore |
  `\                            looking like an idiot.” —Steven Wright |
_o__)                                                                  |
Ben Finney

Thread

Re: Composition instead of inheritance Carl Banks <pavlovevidence@gmail.com> - 2011-04-28 15:35 -0700
  Re: Composition instead of inheritance Ethan Furman <ethan@stoneleaf.us> - 2011-04-28 18:43 -0700
    Re: Composition instead of inheritance Ben Finney <ben+python@benfinney.id.au> - 2011-04-29 13:44 +1000
      Re: Composition instead of inheritance Jean-Michel Pichavant <jeanmichel@sequans.com> - 2011-04-29 11:23 +0200
  Re: Composition instead of inheritance MRAB <python@mrabarnett.plus.com> - 2011-04-29 03:14 +0100
  Re: Composition instead of inheritance James Mills <prologic@shortcircuit.net.au> - 2011-04-29 13:16 +1000
  Re: Composition instead of inheritance Dan Stromberg <drsalists@gmail.com> - 2011-04-28 20:58 -0700
    Re: Composition instead of inheritance Ben Finney <ben+python@benfinney.id.au> - 2011-04-29 14:14 +1000
  Re: Composition instead of inheritance John Nagle <nagle@animats.com> - 2011-04-28 22:10 -0700
  Re: Composition instead of inheritance Ethan Furman <ethan@stoneleaf.us> - 2011-04-29 13:39 -0700

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