[Python-ideas] PEP 315: do-while

[jimjhb at aol.com]

Sounds good to me.  Just let people know it's OK to use breaks!!!


MISRA-C 1998 (I know it's C, but people extrapolated that to other languages) banned continues and breaks.
MISRA-C 2004 allowed for one break in a loop.


But by that point the damage had been done.  Now there are lots of folks out there that have been trained to NOT use break and continue (ever), even in Python.

So the notion was an attempt to deal with that perhaps unreasonable, but still actual, reality.


-Jim


-----Original Message-----
From: Guido van Rossum <guido at python.org>
To: jimjhb <jimjhb at aol.com>
Cc: lukasz <lukasz at langa.pl>; python-ideas <python-ideas at python.org>
Sent: Wed, Jun 26, 2013 4:41 pm
Subject: Re: [Python-ideas] PEP 315: do-while


FWIW I'm against adding anything along these lines (the motivation is
the same as what I wrote before).

On Wed, Jun 26, 2013 at 1:25 PM,  <jimjhb at aol.com> wrote:
> Just to clarify, PEP 315 had to do with a do-while concept (to make common
> use of pre-while code that
> often exists) and not  the (dubious) issue of:
>
> for X in listY while conditionZ:
>
> or
>
> for X in listY and conditionZ:
>
> (fwhile)
>
> Right?
>
> There seemed to be some confusion, but maybe they are related, but I'm not
> sure how....
>
> -Jim
>
>
> -----Original Message-----
> From: Łukasz Langa <lukasz at langa.pl>
> To: Guido van Rossum <guido at python.org>
> Cc: Python-Ideas <python-ideas at python.org>
> Sent: Wed, Jun 26, 2013 11:40 am
> Subject: Re: [Python-ideas] PEP 315: do-while
>
> On 26 cze 2013, at 17:03, Guido van Rossum <guido at python.org> wrote:
>
> Please reject the PEP. More variations along these lines won't make the
> language more elegant or easier to learn. They'd just save a few hasty folks
> some typing while making others who have to read/maintain their code wonder
> what it means.
>
>
> Done. PEP 315 has been rejected.
>
> http://hg.python.org/peps/rev/21deefe50c51
>
> --
> Best regards,
> Łukasz Langa
>
> WWW: http://lukasz.langa.pl/
> Twitter: @llanga
> IRC: ambv on #python-dev
>
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-- 
--Guido van Rossum (python.org/~guido)

 
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