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Re: Code flow control

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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

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Code flow control Kevin Chadwick <kevc3no4@gmail.com> - 2021-10-15 08:08 -0700
  Re: Code flow control "J-P. Rosen" <rosen@adalog.fr> - 2021-10-15 19:48 +0200
    Re: Code flow control "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2021-10-15 20:03 +0200
      Re: Code flow control Kevin Chadwick <kevc3no4@gmail.com> - 2021-10-15 12:19 -0700
      Re: Code flow control "G.B." <bauhaus@notmyhomepage.invalid> - 2021-10-15 22:02 +0200
        Re: Code flow control Kevin Chadwick <kevc3no4@gmail.com> - 2021-10-15 14:30 -0700
          Re: Code flow control "Randy Brukardt" <randy@rrsoftware.com> - 2021-10-15 17:51 -0500
        Re: Code flow control "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2021-10-16 09:50 +0200
          Re: Code flow control Kevin Chadwick <m8il1ists@gmail.com> - 2021-10-16 06:26 -0700
            Re: Code flow control Kevin Chadwick <kevc3no4@gmail.com> - 2021-11-26 05:44 -0800
  Re: Code flow control "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> - 2021-10-15 19:53 +0200
  Re: Code flow control Roger Mc <rogermcm2@gmail.com> - 2021-10-15 16:30 -0700

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