From: Kevin Chadwick <m8il1ists@gmail.com>
Subject: Re: Code flow control
Date: Sat, 16 Oct 2021 06:26:40 -0700 (PDT) [thread overview]
Message-ID: <60346167-ea7c-40ee-bdf5-cc67b75fa964n@googlegroups.com> (raw)
In-Reply-To: <ske078$122h$1@gioia.aioe.org>
On Saturday, October 16, 2021 at 8:50:04 AM UTC+1, Dmitry A. Kazakov wrote:
> On 2021-10-15 22:02, G.B. wrote:
> > On 15.10.21 20:03, Dmitry A. Kazakov wrote:
> >> On 2021-10-15 19:48, J-P. Rosen wrote:
> >>
> >>> Some people reserve exceptions for signalling errors. I regard them
> >>> as a way to handle "exceptional" situations, i.e. when the normal
> >>> flow of control cannot continue. For example, in a deep recursive
> >>> search, they are handy to stop the recursion and go back to top level
> >>> when you have found what you were looking for. Some would disagree
> >>> with that.
> >>
> >> I strongly believe that this is the only consistent way to treat
> >> exceptions.
> >
> > Once found, pass the result to the party that needs it.
> > Then, finish the computational task that found the result.
> > Is there anything besides exceptions to do that, and orderly?
> Exceptions is having two results: data read or file end, commit or
> rollback, item parsed or syntax error, next item or completed etc.
> Consequently there are two paths of execution, one per result. The more
> frequent/regular/complex path runs as the normal flow another does as
> exception propagation.
>
> In a data flow architecture you can have as many paths as you wanted,
> e.g. in a state machine. That does not work well as programming
> paradigm. Two paths is just how much the programmer can handle.
> --
> Regards,
> Dmitry A. Kazakov
> http://www.dmitry-kazakov.de
My experience with exceptions and try catch even, is limited.
I am a little confused as to the optimum extent of their use between
this thread and the thread "best practice: error handling"
"https://groups.google.com/g/comp.lang.ada/c/xL0qGSUQSbE/m/N8LJ8VNMJEQJ"
I will look at some code on github to further my understanding.
If anyone has any links to good examples, then that would be useful?
Regards,
kc
next prev parent reply other threads:[~2021-10-16 13:26 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-15 15:08 Code flow control Kevin Chadwick
2021-10-15 17:48 ` J-P. Rosen
2021-10-15 18:03 ` Dmitry A. Kazakov
2021-10-15 19:19 ` Kevin Chadwick
2021-10-15 20:02 ` G.B.
2021-10-15 21:30 ` Kevin Chadwick
2021-10-15 22:51 ` Randy Brukardt
2021-10-16 7:50 ` Dmitry A. Kazakov
2021-10-16 13:26 ` Kevin Chadwick [this message]
2021-11-26 13:44 ` Kevin Chadwick
2021-10-15 17:53 ` Jeffrey R. Carter
2021-10-15 23:30 ` Roger Mc
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