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Groups > comp.lang.javascript > #29274
| Newsgroups | comp.lang.javascript |
|---|---|
| Date | 2016-01-16 16:52 -0800 |
| References | <94ec98fa-9956-48c9-ad34-de8d07cd6419@googlegroups.com> <MPG.31044fd5afc9fcf9896d8@news.eternal-september.org> <160120161343519329%timstreater@greenbee.net> <p7CdnQD0X6TnwQfLnZ2dnUU7-dGdnZ2d@giganews.com> |
| Message-ID | <362be156-5fc4-4e84-9337-2898e1997e97@googlegroups.com> (permalink) |
| Subject | Re: Using break in while loops bad habit? |
| From | "Michael Haufe (TNO)" <tno@thenewobjective.com> |
On Saturday, January 16, 2016 at 9:06:45 AM UTC-6, Robert Heller wrote:
> There are times when the 'exceptional' conditions cannot be [easily] tested in
> the while clause, usually because they don't 'exist' in that context or scope.
> Or if you must do that, you end up using 'continue' in much the same places as
> you would have used 'break' -- one *could* argue that 'continue' is just as
> 'bad' as 'break' for many of the same reasons. And yes, extreme use of
> if-then-else can be used instead of 'continue'. Both break and continue can be
> used to make the code *clearer* [to a *human* reader]. OTOH, one 'trick' is to
> write the loop like this:
>
> done = false;
> while (!done) {
> if (somecondition) {
> done = true;
> } else {
> some code;
> if (someothercondition) {
> done = true;
> } else {
> some other code;
> }
> }
> }
>
> The above totally avoids both break and continue. Whether it is clear or not
> is a different issue.
Once the exiting criteria of a loop gets too complex to place in its head one should probably refactor the loop.
The same applies when you start to see a Great Maze of If-Elsedom appearing.
The loop is doing too much.
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Using break in while loops bad habit? jonas.thornvall@gmail.com - 2016-01-16 04:19 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-16 13:59 +0100
Re: Using break in while loops bad habit? Philip Herlihy <thiswillbounceback@you.com> - 2016-01-16 15:41 +0000
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-16 16:41 -0800
Re: Using break in while loops bad habit? Philip Herlihy <thiswillbounceback@you.com> - 2016-01-16 13:02 +0000
Re: Using break in while loops bad habit? Tim Streater <timstreater@greenbee.net> - 2016-01-16 13:43 +0000
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-16 14:56 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-18 09:39 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-18 19:16 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-23 10:32 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-24 00:49 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-25 21:36 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-26 10:12 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-26 11:11 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-26 22:48 +0100
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-26 15:03 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-27 00:51 +0100
Re: Using break in while loops bad habit? Norman Peelman <npeelman@cfl.rr.com> - 2016-01-23 21:00 -0500
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-25 21:39 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-26 10:17 +0100
Re: Using break in while loops bad habit? Doc O'Leary <droleary@2015usenet1.subsume.com> - 2016-01-26 17:10 +0000
Re: Using break in while loops bad habit? Doc O'Leary <droleary@2015usenet1.subsume.com> - 2016-01-26 16:44 +0000
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-26 11:17 -0800
Re: Using break in while loops bad habit? Doc O'Leary <droleary@2015usenet1.subsume.com> - 2016-01-27 05:00 +0000
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-27 09:29 -0800
Re: Using break in while loops bad habit? Norman Peelman <npeelman@cfl.rr.com> - 2016-01-23 20:53 -0500
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-24 10:28 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-25 21:41 -0800
Re: Using break in while loops bad habit? Robert Heller <heller@deepsoft.com> - 2016-01-16 09:06 -0600
Re: Using break in while loops bad habit? Tim Streater <timstreater@greenbee.net> - 2016-01-16 17:31 +0000
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-16 16:52 -0800
Re: Using break in while loops bad habit? Aleksandro <aleksandro@gmx.com> - 2016-01-16 12:43 -0300
Re: Using break in while loops bad habit? Silvio <silvio@internet.com> - 2016-01-16 17:51 +0100
Re: Using break in while loops bad habit? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-17 09:09 +0100
Re: Using break in while loops bad habit? John Harris <niam@jghnorth.org.uk.invalid> - 2016-01-17 11:19 +0000
Re: Using break in while loops bad habit? Silvio <silvio@internet.com> - 2016-01-18 00:40 +0100
Re: Using break in while loops bad habit? Andrew Poulos <ap_prog@hotmail.com> - 2016-01-18 13:53 +1100
Re: Using break in while loops bad habit? Silvio <silvio@internet.com> - 2016-01-18 07:59 +0100
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-16 16:34 -0800
Re: Using break in while loops bad habit? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-17 01:29 +0000
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-17 19:22 -0800
Re: Using break in while loops bad habit? Tim Streater <timstreater@greenbee.net> - 2016-01-18 10:00 +0000
Re: Using break in while loops bad habit? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-18 10:50 +0000
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-20 16:40 -0800
Re: Using break in while loops bad habit? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-21 01:50 +0000
Re: Using break in while loops bad habit? Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-01-18 22:55 +0000
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-18 16:10 -0800
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-18 09:46 -0800
Re: Using break in while loops bad habit? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-01-18 10:16 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-18 19:18 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-23 10:33 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-24 00:51 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-25 21:46 -0800
Re: Using break in while loops bad habit? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-01-26 10:22 +0100
Re: Using break in while loops bad habit? Gene Wirchenko <genew@telus.net> - 2016-01-26 11:19 -0800
Re: Using break in while loops bad habit? Doc O'Leary <droleary@2015usenet1.subsume.com> - 2016-01-19 16:48 +0000
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