From: "Randy Brukardt" <randy@rrsoftware.com>
Subject: Re: Tests in a software release
Date: Wed, 15 Nov 2017 15:53:41 -0600
Date: 2017-11-15T15:53:41-06:00 [thread overview]
Message-ID: <ouid16$ftm$1@franka.jacob-sparre.dk> (raw)
In-Reply-To: ouguv4$1h92$1@gioia.aioe.org
"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message
news:ouguv4$1h92$1@gioia.aioe.org...
> On 15/11/2017 01:06, Randy Brukardt wrote:
>
>> I'd consider making an argument for a pragma to *require* an ELSE part
>> for
>> all IF statements.
>
> Only if return and raise statements had the forms:
>
> return Result when Condition;
>
> raise Exception with Text when Condition;
You're right that sometimes the comment isn't very enlightening:
if Condition then
return Result;
-- else nothing needed.
end if;
...but note that often in such cases it is useful to say how the result will
be determined if Condition is False:
-- else continue looking for the result.
which does provide useful information to a reader (especially one that
hasn't looked at a particular subprogram in a decade, something that happens
a lot when debugging a long-lived program like Janus/Ada).
The place where this comment is annoying is for tracing:
if J2Trace.Trace(This_Unit) then
Put_Line ("Type " & Type_Ptr'Image(The_Type) & " is unconstrained");
-- else no trace needed.
end if;
Here, the else comment is noise. I personally usually leave it out (having
an exception in the style guide for trace messages), but others (especially
Isaac) always followed the rule religiously, so Janus/Ada is full of this
comment.
Randy.
next prev parent reply other threads:[~2017-11-15 21:53 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-25 19:30 Tests in a software release Victor Porton
2017-10-26 7:20 ` Dmitry A. Kazakov
2017-10-27 18:06 ` G. B.
2017-10-27 18:54 ` Dmitry A. Kazakov
2017-10-28 6:53 ` G.B.
2017-10-28 7:35 ` Dmitry A. Kazakov
2017-10-30 20:44 ` G. B.
2017-10-30 20:56 ` Dmitry A. Kazakov
2017-10-31 7:17 ` G.B.
2017-10-31 8:32 ` Dmitry A. Kazakov
2017-11-03 7:24 ` G.B.
2017-11-03 8:16 ` Dmitry A. Kazakov
2017-11-03 12:49 ` Shark8
2017-11-04 10:15 ` G.B.
2017-11-15 0:11 ` Randy Brukardt
2017-11-15 17:57 ` G. B.
2017-11-15 20:46 ` Dmitry A. Kazakov
2017-11-17 15:36 ` Shark8
2017-11-15 22:17 ` Randy Brukardt
2017-11-16 21:44 ` G.B.
2017-11-17 0:15 ` Randy Brukardt
2017-11-17 15:45 ` Shark8
2017-11-18 1:07 ` Randy Brukardt
2017-11-15 0:06 ` Randy Brukardt
2017-11-15 8:47 ` Dmitry A. Kazakov
2017-11-15 21:53 ` Randy Brukardt [this message]
2017-11-15 16:47 ` Jeffrey R. Carter
2017-11-15 16:59 ` J-P. Rosen
2017-11-15 20:45 ` Dmitry A. Kazakov
2017-11-15 21:58 ` Randy Brukardt
2017-11-16 5:50 ` J-P. Rosen
2017-11-16 23:53 ` Randy Brukardt
2017-11-15 0:01 ` Randy Brukardt
2017-11-16 17:02 ` Robert Eachus
2017-11-17 0:20 ` Randy Brukardt
2017-11-22 20:40 ` Robert Eachus
2017-11-14 23:55 ` Randy Brukardt
2017-10-26 8:09 ` Stefan.Lucks
2017-10-26 17:30 ` Simon Clubley
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