From: Brian Drummond <brian@shapes.demon.co.uk>
Subject: Re: asynchronous task communication
Date: Tue, 8 Jan 2013 12:02:52 +0000 (UTC)
Date: 2013-01-08T12:02:52+00:00 [thread overview]
Message-ID: <kch1tc$u9s$1@dont-email.me> (raw)
In-Reply-To: kcf428$on8$1@dont-email.me
On Mon, 07 Jan 2013 11:27:20 -0700, Jeffrey Carter wrote:
> On 01/07/2013 03:49 AM, Brian Drummond wrote:
>>
>> Then how do you maintain links from one such object to others, to build
>> a network or graph? You can access a vector element via a cursor - is
>> it safe and reasonable to store and use cursors to maintain references
>> to an object as the vector grows?
>
> A "vector" is an unbounded array. You access an array component using an
> index,
> and that is also how to reference a component of an unbounded array. The
> index of a specific component will not change unless the user
> specifically changes it (by inserting a component with a smaller index,
> for example).
And the index is a Cursor type.
So, holding onto a cursor would be unsafe (i.e. no longer refer to the
original object) after an "insert" operation, possibly earlier in the
vector?
- Brian
next prev parent reply other threads:[~2013-01-08 12:02 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-31 0:16 asynchronous task communication Charles Hixson
2012-12-31 9:04 ` Simon Wright
2012-12-31 11:49 ` Simon Wright
2012-12-31 10:50 ` J-P. Rosen
2012-12-31 12:09 ` Georg Bauhaus
2012-12-31 18:52 ` Charles Hixson
2012-12-31 20:18 ` Shark8
2012-12-31 21:09 ` Niklas Holsti
2012-12-31 22:15 ` Randy Brukardt
2013-01-01 3:58 ` Charles Hixson
2013-01-01 4:48 ` tmoran
2013-01-01 17:59 ` Charles Hixson
2013-01-01 3:51 ` Charles Hixson
2013-01-01 9:59 ` Dmitry A. Kazakov
2013-01-01 10:38 ` Brian Drummond
2013-01-01 12:32 ` Jeffrey Carter
2013-01-01 18:21 ` Charles Hixson
2013-01-01 18:54 ` Robert A Duff
2013-01-02 7:36 ` Charles Hixson
2013-01-02 9:55 ` Dmitry A. Kazakov
2013-01-02 19:02 ` Charles Hixson
2013-01-02 20:35 ` Dmitry A. Kazakov
2013-01-03 0:20 ` Charles Hixson
2013-01-03 6:34 ` Charles Hixson
2013-01-03 8:50 ` Dmitry A. Kazakov
2013-01-03 19:01 ` Charles Hixson
2013-01-03 10:01 ` J-P. Rosen
2013-01-03 19:29 ` Charles Hixson
2013-01-04 8:17 ` J-P. Rosen
2013-01-05 4:31 ` Charles Hixson
2013-01-09 8:34 ` Stephen Leake
2013-01-03 22:27 ` Randy Brukardt
2013-01-05 5:18 ` Charles Hixson
2013-01-05 8:48 ` Niklas Holsti
2013-01-06 22:55 ` Charles Hixson
2013-01-07 0:38 ` tmoran
2013-01-07 6:07 ` Shark8
2013-01-07 10:49 ` Brian Drummond
2013-01-07 18:27 ` Jeffrey Carter
2013-01-08 12:02 ` Brian Drummond [this message]
2013-01-08 17:12 ` Jeffrey Carter
2013-01-08 18:18 ` Simon Wright
2013-01-08 20:29 ` Dmitry A. Kazakov
2013-01-08 21:01 ` Jeffrey Carter
2013-01-08 21:14 ` Simon Wright
2013-01-08 22:11 ` Randy Brukardt
2013-01-08 22:52 ` Jeffrey Carter
2013-01-08 22:26 ` Brian Drummond
2013-01-08 2:41 ` Randy Brukardt
2013-01-02 22:43 ` Niklas Holsti
2013-01-03 1:30 ` Charles Hixson
2013-01-03 12:11 ` Georg Bauhaus
2013-01-03 13:17 ` Dmitry A. Kazakov
2013-01-05 20:19 ` Charles Hixson
2013-01-07 4:01 ` Shark8
2013-01-01 19:59 ` J-P. Rosen
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