From: John Perry <john.perry@usm.edu>
Subject: Why .ads as well as .adb?
Date: Sat, 1 Jun 2019 17:48:16 -0700 (PDT)
Date: 2019-06-01T17:48:16-07:00 [thread overview]
Message-ID: <28facad3-c55f-4ef2-8ef8-004925b7d1f1@googlegroups.com> (raw)
Hello
I understand that Ada, like Modula-2 and Modula-3, and arguably like C++, requires a definition file (.ads) as well as an implementation file (.adb). With Oberon, Wirth moved away from definition files, using a symbol to indicate which module identifiers should be exported. (Someone else may have done this before him; it's just that I'm most familiar with this history.) Most languages I'm familiar with these days do something similar, either via public/private or some other mechanism.
As far as I can tell, though, Ada has stuck with the two separate files, rather than, say, generating an .ads from an .adb with export markup.
Is there a reason Ada hasn't moved to this simpler structure?
john perry
next reply other threads:[~2019-06-02 0:48 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-02 0:48 John Perry [this message]
2019-06-02 5:42 ` Why .ads as well as .adb? J-P. Rosen
2019-06-02 6:39 ` Dmitry A. Kazakov
2019-06-03 7:35 ` Maciej Sobczak
2019-06-03 7:57 ` J-P. Rosen
2019-06-03 19:49 ` Keith Thompson
2019-06-04 8:03 ` Maciej Sobczak
2019-06-03 8:13 ` Dmitry A. Kazakov
2019-06-03 19:51 ` Keith Thompson
2019-06-03 20:18 ` Dmitry A. Kazakov
2019-06-04 8:24 ` Maciej Sobczak
2019-06-04 9:33 ` Dmitry A. Kazakov
2019-06-05 9:04 ` Maciej Sobczak
2019-06-05 12:48 ` Dmitry A. Kazakov
2019-06-05 17:12 ` G. B.
2019-06-05 18:50 ` Optikos
2019-06-05 22:57 ` Randy Brukardt
2019-06-04 22:28 ` Randy Brukardt
2019-06-05 8:28 ` Maciej Sobczak
2019-06-05 9:20 ` J-P. Rosen
2019-06-05 9:28 ` Paul Rubin
2019-06-05 10:11 ` Niklas Holsti
2019-06-05 12:58 ` Maciej Sobczak
2019-06-05 14:28 ` Niklas Holsti
2019-06-06 7:34 ` Maciej Sobczak
2019-06-06 19:51 ` Keith Thompson
2019-06-06 20:27 ` J-P. Rosen
2019-06-06 21:12 ` Randy Brukardt
2019-06-06 21:17 ` Randy Brukardt
2019-06-06 22:08 ` Dennis Lee Bieber
2019-06-07 7:59 ` Maciej Sobczak
2019-06-07 10:42 ` alby.gamper
2019-06-07 16:59 ` Dennis Lee Bieber
2019-06-07 14:10 ` Brad Moore
2019-06-07 23:37 ` Paul Rubin
2019-06-08 1:16 ` Brad Moore
2019-06-08 7:34 ` Simon Wright
2019-06-08 17:44 ` G.B.
2019-06-08 21:41 ` Keith Thompson
2019-06-09 0:40 ` Paul Rubin
2019-06-09 18:56 ` Keith Thompson
2019-06-09 20:35 ` John Perry
2019-06-09 21:15 ` Niklas Holsti
2019-06-09 22:37 ` John Perry
2019-06-10 9:01 ` Simon Wright
2019-06-10 13:15 ` Simon Wright
2019-06-10 9:22 ` Niklas Holsti
2019-06-09 21:37 ` Simon Wright
2019-06-09 22:40 ` John Perry
2019-06-10 9:07 ` Simon Wright
2019-06-09 21:46 ` Niklas Holsti
2019-06-10 17:11 ` Dennis Lee Bieber
2019-06-08 4:57 ` Randy Brukardt
2019-06-08 23:57 ` Optikos
2019-06-09 0:43 ` Paul Rubin
2019-06-10 8:17 ` Maciej Sobczak
2019-06-10 19:10 ` G.B.
2019-06-10 22:07 ` Randy Brukardt
2019-06-11 0:32 ` Optikos
2019-06-11 15:39 ` Brad Moore
2019-06-11 16:14 ` John Perry
2019-06-11 16:46 ` Shark8
2019-06-11 19:29 ` John Perry
2019-06-14 6:12 ` Brad Moore
2019-06-14 21:51 ` John Perry
2019-06-14 16:29 ` djakoogler
2019-06-11 18:19 ` joakimds
2019-06-11 15:49 ` Jeffrey R. Carter
2019-06-07 7:36 ` Niklas Holsti
2019-06-05 22:41 ` Randy Brukardt
2019-06-06 3:34 ` Keith Thompson
2019-06-06 7:29 ` Maciej Sobczak
2019-06-06 15:30 ` John Perry
2019-06-06 15:41 ` Brad Moore
2019-06-06 19:42 ` Keith Thompson
2019-06-06 16:37 ` Dennis Lee Bieber
2019-06-02 9:59 ` joakimds
2019-06-02 20:14 ` G.B.
2019-06-03 13:37 ` John Perry
2019-06-03 14:50 ` Niklas Holsti
2019-06-03 19:23 ` John Perry
2019-06-03 21:04 ` Niklas Holsti
2019-06-03 18:51 ` Lucretia
2019-06-03 19:32 ` John Perry
2019-06-03 17:00 ` Jeffrey R. Carter
2019-06-03 18:59 ` Lucretia
2019-06-03 19:29 ` John Perry
2019-06-03 20:00 ` Jeffrey R. Carter
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