From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Record operations (Algebraic Data Types and printing)
Date: Sat, 6 Oct 2018 19:19:00 +0200
Date: 2018-10-06T19:19:00+02:00 [thread overview]
Message-ID: <ppaqq2$qgs$1@gioia.aioe.org> (raw)
In-Reply-To: ppan8a$jvb$1@dont-email.me
On 2018-10-06 18:18, Jeffrey R. Carter wrote:
> On 10/06/2018 07:38 AM, J-P. Rosen wrote:
>> Le 05/10/2018 à 19:58, AdaMagica a écrit :
>>> Do it yourself... There is no such default.
>> Yet. There is a proposal for Ada 202X, see AI12-0020
>
> Seems to me allowing 'Image by default for a private type is a violation
> of privacy.
Why? If you don't see the type T you cannot use T'Image.
---------------
The problem with the proposal is same as with 'Image itself. It is a hack.
There simply should be an interface with a primitive operation to
convert object into a string (Image) and another to construct the object
from string (Value). You want string formatting? Inherit from the
interface, that is. Clean, manifested, no distributed overhead, not a
compiler vendor problem anymore. [All types must have interfaces, yes]
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2018-10-06 17:19 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-05 17:46 Record operations (Algebraic Data Types and printing) Henrik Härkönen
2018-10-05 17:58 ` AdaMagica
2018-10-05 18:11 ` Henrik Härkönen
2018-10-05 18:46 ` Niklas Holsti
2018-10-05 20:33 ` Henrik Härkönen
2018-10-06 5:38 ` J-P. Rosen
2018-10-06 7:08 ` Henrik Härkönen
2018-10-06 16:42 ` Lucretia
2018-10-08 23:08 ` Randy Brukardt
2018-10-09 1:12 ` Lucretia
2018-10-09 22:20 ` Randy Brukardt
2018-10-10 7:17 ` Dmitry A. Kazakov
2018-10-10 18:13 ` G. B.
2018-10-10 18:36 ` Dmitry A. Kazakov
2018-10-11 11:29 ` Björn Lundin
2018-10-11 14:45 ` Jacob Sparre Andersen
2018-10-11 18:34 ` Björn Lundin
2018-10-12 19:08 ` G. B.
2018-10-12 19:20 ` Randy Brukardt
2018-10-11 21:32 ` Randy Brukardt
2018-10-10 18:38 ` Shark8
2018-10-11 8:36 ` Dmitry A. Kazakov
2018-10-11 21:35 ` Randy Brukardt
2018-10-12 7:14 ` Dmitry A. Kazakov
2018-10-12 19:16 ` Randy Brukardt
2018-10-06 16:18 ` Jeffrey R. Carter
2018-10-06 17:19 ` Dmitry A. Kazakov [this message]
2018-10-08 23:03 ` Randy Brukardt
2018-10-09 6:22 ` Henrik Härkönen
2018-10-09 7:32 ` Paul Rubin
2018-10-09 7:38 ` Henrik Härkönen
2018-10-09 22:25 ` Randy Brukardt
2018-10-05 18:32 ` Niklas Holsti
2018-10-05 18:43 ` Henrik Härkönen
2018-10-05 19:41 ` Simon Wright
2018-10-06 6:17 ` Henrik Härkönen
2018-10-06 16:04 ` Stephen Leake
2018-10-06 16:56 ` Simon Wright
2018-10-08 6:44 ` briot.emmanuel
2018-10-08 14:09 ` Simon Wright
2018-10-08 14:21 ` Bill Findlay
2018-10-08 14:42 ` Simon Wright
2018-10-08 16:46 ` Bill Findlay
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