From: george.priv@gmail.com
Subject: Re: How to return an empty aggregate
Date: Sat, 5 Apr 2008 09:04:29 -0700 (PDT)
Date: 2008-04-05T09:04:29-07:00 [thread overview]
Message-ID: <b29453e1-66eb-49ee-ad22-dd017a655134@a1g2000hsb.googlegroups.com> (raw)
In-Reply-To: d96f6360-22c2-4060-8aa9-d67739e1ad2b@e39g2000hsf.googlegroups.com
On Apr 5, 9:48 am, Maciej Sobczak <see.my.homep...@gmail.com> wrote:
> On 5 Kwi, 01:58, george.p...@gmail.com wrote:
>
> > To me it seems that simple callback will be much more simple and clear
> > way to achieve the same result.
>
> It depends where you start with the design. If you start with
> stateless concrete factories (or you just see the whole picture right
> from the beginning), then callbacks will seem attractive. But if you
> start from the user site without knowing up-front what will kind of
> factory will be used then 'Class is the OO way to solve the problem.
>
> What will you do with the callback interface if at some point you
> discover that stateful factory will be most appropriate? Will you mess
> around with local functions that manipulate state from their enclosing
> scope? What about many such factories that have distinct states? And
> so on.
>
> > > If it's stateless, then it does not need any protection - there is
> > > nothing to protect.
>
> > except for reenterance that in most of cases matter for that type of
> > objects.
>
> If it's stateless, then reentrance is given for free.
>
> --
> Maciej Sobczak *www.msobczak.com*www.inspirel.com
Can you provide non-academic example?
next prev parent reply other threads:[~2008-04-05 16:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-01 11:58 How to return an empty aggregate Maciej Sobczak
2008-04-01 12:54 ` Anh Vo
2008-04-01 17:18 ` Adam Beneschan
2008-04-02 7:16 ` Maciej Sobczak
2008-04-01 13:34 ` Dmitry A. Kazakov
2008-04-01 15:00 ` Robert A Duff
2008-04-02 7:19 ` Maciej Sobczak
2008-04-03 5:02 ` george.priv
2008-04-03 9:09 ` Maciej Sobczak
2008-04-04 15:38 ` george.priv
2008-04-04 20:35 ` Maciej Sobczak
2008-04-04 23:58 ` george.priv
2008-04-05 13:48 ` Maciej Sobczak
2008-04-05 16:04 ` george.priv [this message]
2008-04-05 21:14 ` Maciej Sobczak
2008-04-05 22:36 ` george.priv
2008-04-06 19:53 ` Maciej Sobczak
2008-04-06 7:00 ` george.priv
2008-04-06 20:04 ` Maciej Sobczak
2008-04-07 20:23 ` george.priv
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