From: lutz@iks-jena.de (Lutz Donnerhacke)
Subject: Re: Run-Time Type Assignment
Date: Wed, 28 Aug 2002 14:59:11 +0000 (UTC)
Date: 2002-08-28T14:59:11+00:00 [thread overview]
Message-ID: <slrnampp9q.og.lutz@taranis.iks-jena.de> (raw)
In-Reply-To: wccn0r7hx5y.fsf@shell01.TheWorld.com
* Robert A Duff wrote:
>Kilgallen@SpamCop.net (Larry Kilgallen) writes:
>> What is a downward closure ?
>
>The ability to pass a procedure as a parameter to a procedure.
>The "downward" means the closure is passed "down" from caller to
>callee. This is more restrictive than the "full closures" which are
>found in Lisp and many other languages of that ilk; a full closure may
>be *returned* from a procedure, and may be assigned into a variable.
>
>GNAT supports downward closures via the 'Unrestricted_Access attribute,
>but that's not Ada (unfortunately).
>
>In Pascal, downward closures are very useful for making iterators and
>other user-defined control structures.
In Ada you use generics for this.
next prev parent reply other threads:[~2002-08-28 14:59 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-28 6:53 Run-Time Type Assignment Robert C. Leif
2002-08-28 11:04 ` Robert Dewar
2002-08-28 13:35 ` Robert A Duff
2002-08-28 14:56 ` Larry Kilgallen
2002-08-28 14:31 ` Robert A Duff
2002-08-28 14:59 ` Lutz Donnerhacke [this message]
2002-08-28 22:32 ` Robert A Duff
2002-08-29 22:55 ` Dmitry A.Kazakov
2002-08-28 18:03 ` Frank J. Lhota
2002-08-28 18:37 ` Pat Rogers
2002-08-28 22:47 ` Robert A Duff
2002-08-29 13:32 ` Ben Brosgol
2002-08-29 13:52 ` SIMON Claude
2002-08-29 14:30 ` Robert A Duff
2002-08-29 18:27 ` Randy Brukardt
2002-08-29 14:56 ` Robert A Duff
2002-08-30 3:04 ` Ben Brosgol
2002-08-30 22:54 ` Robert A Duff
2002-08-29 15:09 ` Larry Kilgallen
2002-08-29 14:29 ` Marin D. Condic
2002-08-28 13:41 ` Robert A Duff
2002-08-28 17:15 ` Hyman Rosen
2002-08-28 20:27 ` Björn Lundin
[not found] <002a01c24e5f$9ee347b0$789a0844@robertqgx6k4x9>
2002-08-28 11:33 ` sk
[not found] ` <3D6CB4F5.F4E05D76@myob.com>
2002-08-28 11:37 ` sk
2002-08-28 15:39 ` Robert C. Leif
2002-08-28 18:53 ` Jeffrey Carter
2002-08-28 20:54 ` Robert C. Leif
2002-08-28 22:55 ` Robert A Duff
2002-08-29 3:18 ` Robert C. Leif
[not found] <005101c24ea9$0de9c960$789a0844@robertqgx6k4x9>
2002-08-28 16:06 ` sk
2002-08-28 22:44 ` tmoran
2002-08-29 0:37 ` tmoran
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