Re: DO... LOOP question

Date	2012-03-27 09:34 -1000
From	"Elizabeth D. Rather" <erather@forth.com>
Organization	FORTH, Inc.
Newsgroups	comp.lang.forth
Subject	Re: DO... LOOP question
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On 3/27/12 9:20 AM, BruceMcF wrote:
...
> Given that if its complex enough to support three or four early exits
> from a loop, its complex enough to factor out into its own word and to
> use EXIT as an early loop exit, the "WHENCE" can easily strike someone
> as being much like a solution in search of a problem.

I think this is the essential point here. Complex control flow is asking 
for trouble, in any language, which is why "structured programming" 
remains good discipline. Good Forth style means short, simple 
definitions, factored such that you don't need tortured control flow. 
When you feel the need for some nasty control structure, it's a clue to 
stop and re-think your approach.

Cheers,
Elizabeth

-- 
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Elizabeth D. Rather   (US & Canada)   800-55-FORTH
FORTH Inc.                         +1 310.999.6784
5959 West Century Blvd. Suite 700
Los Angeles, CA 90045
http://www.forth.com

"Forth-based products and Services for real-time
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Thread

DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-18 15:52 +0000
  Re: DO... LOOP question Coos Haak <chforth@hccnet.nl> - 2012-03-18 17:08 +0100
  Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-18 09:41 -0700
    Re: DO... LOOP question Coos Haak <chforth@hccnet.nl> - 2012-03-18 20:51 +0100
      Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-18 14:37 -0700
    Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-18 15:56 -0700
      Re: DO... LOOP question Coos Haak <chforth@hccnet.nl> - 2012-03-19 01:04 +0100
        Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-18 17:25 -0700
        Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-18 17:43 -0700
          Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-18 18:48 -0700
        Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-18 21:49 -0700
          Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-19 11:39 -0700
          Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-20 12:16 -0700
    Re: DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-20 16:54 +0000
      Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-20 11:41 -0700
        Re: DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-24 17:29 +0000
          Re: DO... LOOP question Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-03-24 13:22 -0500
            Re: DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-25 04:09 +0000
              Re: DO... LOOP question Coos Haak <chforth@hccnet.nl> - 2012-03-25 13:49 +0200
                Re: DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-27 17:47 +0000
              Re: DO... LOOP question Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-03-25 19:45 +0000
              Re: DO... LOOP question Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-03-26 04:26 -0500
                Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-26 07:28 -0700
                Re: DO... LOOP question Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-03-26 10:03 -0500
                Re: DO... LOOP question Coos Haak <chforth@hccnet.nl> - 2012-03-26 18:47 +0200
                Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-26 09:53 -0700
                Re: DO... LOOP question Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-03-27 11:21 +0000
                Re: DO... LOOP question Helmar Wodtke <helmwo@gmail.com> - 2012-03-27 04:34 -0700
                Re: DO... LOOP question Coos Haak <chforth@hccnet.nl> - 2012-03-27 17:33 +0200
                Re: DO... LOOP question Helmar Wodtke <helmwo@gmail.com> - 2012-03-27 09:19 -0700
                Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-27 12:20 -0700
                Re: DO... LOOP question "Elizabeth D. Rather" <erather@forth.com> - 2012-03-27 09:34 -1000
                Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-27 13:00 -0700
              Re: DO... LOOP question Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-03-26 20:16 -0700
          Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-24 11:37 -0700
            Re: DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-25 06:39 +0000
              Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-25 06:19 -0700
      Re: DO... LOOP question "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-03-21 05:48 -0400
        Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-21 08:36 -0700
      Re: DO... LOOP question BruceMcF <agila61@netscape.net> - 2012-03-21 11:24 -0700
  Re: DO... LOOP question Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-03-21 03:01 -0700
    Re: DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-24 17:44 +0000
      Re: DO... LOOP question Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-03-25 11:57 +0000
      Re: DO... LOOP question Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-03-26 20:14 -0700
        Re: DO... LOOP question Arnold Doray <invalid@invalid.com> - 2012-03-27 16:46 +0000

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