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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: stopping a loop iteration without exiting it
Date: Thu, 4 Jan 2018 10:47:22 +0200
Organization: Tidorum Ltd
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Xref: reader02.eternal-september.org comp.lang.ada:49745
Date: 2018-01-04T10:47:22+02:00
List-Id: <comp.lang.ada>

On 18-01-04 01:17 , Robert A Duff wrote:
> "Randy Brukardt" <randy@rrsoftware.com> writes:
>
>> A "goto" is *not* stupid in this case.
>
> I agree.  There are (rare) cases in Ada when "goto" is the right
> solution, and nested "continue" can be one of them.

But many coding rules frown on "goto" (with good reason, IMO). If 
"continue" is implemented with "goto", either the code-rule-checking 
tools will flag these "gotos" as violations, or the tools must be taught 
to tolerate "gotos" when they are used for "continue".

IMO, if there is a frequent need for a "continue" construct in Ada 
programming, it should just be added to the language, even if this seems 
like shameful imitation of some other, more popular languages.

That said, I don't remember ever having a need for a "continue" in my 
Ada programming, but perhaps this depends on one's design style and 
favourite coding idioms.

> In fact, the goto is BETTER than the continue statement, because the
> place where it's jumping to is marked with a label, ..

If "continue" were added to Ada, of course it should have an optional 
loop-name to mark the loop being continued, as for the current "exit":

     exit Search_Loop when ...;

     continue Search_Loop when ...;

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
       .      @       .