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Groups > comp.lang.forth > #21070

Re: Can i rely on >BODY for anything at all?

Date 2013-03-22 17:39 -1000
From "Elizabeth D. Rather" <erather@forth.com>
Organization FORTH, Inc.
Newsgroups comp.lang.forth
Subject Re: Can i rely on >BODY for anything at all?
References <FqWdnXsu68Ik09bMnZ2dnUVZ_s2dnZ2d@supernews.com> <e6bb27ec-b69b-44e0-86f6-806eaaa1bf4a@googlegroups.com> <8b058263-bc0f-4d8b-9fe9-83b0ce293e02@googlegroups.com> <dLmdnRN9qoryANHMnZ2dnUVZ_uWdnZ2d@supernews.com> <514d12cb$0$6069$e4fe514c@dreader36.news.xs4all.nl>
Message-ID <yM6dnUIhWdOUudDMnZ2dnUVZ_qidnZ2d@supernews.com> (permalink)

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On 3/22/13 4:26 PM, Albert van der Horst wrote:
> In article <dLmdnRN9qoryANHMnZ2dnUVZ_uWdnZ2d@supernews.com>,
> Elizabeth D. Rather <erather@forth.com> wrote:
>> On 3/22/13 6:03 AM, m.a.m.hendrix@tue.nl wrote:
>>> On Friday, March 22, 2013 4:41:08 PM UTC+1, Brad Eckert wrote:
>>>> On Thursday, March 21, 2013 11:20:01 AM UTC-7, Marcel Hendrix wrote:
>>> "Elizabeth D. Rather" writes Re: Can i rely on >BODY for anything at
>> all?
>>> [..]
>>> But that is all system source.
>>> (Most of) my examples are classic programs.
>>
>> Yes. >BODY is useful in the context of a system, but then you know
>> exactly how everything works, when it's appropriate, and what you expect
>> to find in the referenced space.
>>
>> The requirement for portability has to do with user application code. I
>> have found very little need for it in application code. Maybe the
>> difference is that Marcel is using it on his system where he knows how
>> everything works and isn't trying to write portable code, or because
>> he's using it with words defined by CREATE.
>>
>> Remember, standards are all about portability. A rule such as requiring
>>> BODY to be used with CREATEd words is defining what a user can expect
>> to be portable. You can do whatever works on your system of choice if
>> you aren't attempting to write portable application code.
>
> It makes sense that >BODY is used sparingly. The CREATE DOES> construction
> is a kind of data hiding, OO type if you wish. Reaching through towards
> the data goes against the spirit.
>
> The exceptions are additions made by the implementor to the data type,
> and of course test code.

Well, of course an object defined with CREATE DOES> *is* available for 
 >BODY access.

Cheers,
Elizabeth

-- 
==================================================
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
applications since 1973."
==================================================

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Thread

Can i rely on >BODY for anything at all? Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-20 01:03 +0000
  Re: Can i rely on >BODY for anything at all? Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-20 02:18 +0100
    Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-20 13:58 +1100
      Re: Can i rely on >BODY for anything at all? Mark Wills <markrobertwills@yahoo.co.uk> - 2013-03-19 23:59 -0700
        Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-21 23:17 +1100
          Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-21 07:27 -0500
            Re: Can i rely on >BODY for anything at all? Sieur de Bienville <morrimichael@gmail.com> - 2013-03-21 07:01 -0700
              Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-21 09:14 -0500
                DEFER@ (was: Can i rely on >BODY for anything at all?) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-03-21 17:31 +0000
                Re: Can i rely on >BODY for anything at all? Sieur de Bienville <morrimichael@gmail.com> - 2013-03-22 14:30 -0700
                Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-23 05:34 -0500
                Re: Can i rely on >BODY for anything at all? Brad Eckert <hwfwguy@gmail.com> - 2013-03-25 09:44 -0700
            Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-22 01:30 +1100
              Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-21 08:17 -0700
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-22 12:14 +1100
                Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-22 03:33 -0700
              Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-21 15:15 -0500
      Re: Can i rely on >BODY for anything at all? Coos Haak <chforth@hccnet.nl> - 2013-03-22 00:24 +0100
        Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-22 11:49 +1100
          Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-22 04:22 -0700
          Re: Can i rely on >BODY for anything at all? Coos Haak <chforth@hccnet.nl> - 2013-03-22 22:38 +0100
            Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-23 21:37 +1100
              Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-23 05:06 -0700
              Re: Can i rely on >BODY for anything at all? Coos Haak <chforth@hccnet.nl> - 2013-03-23 13:18 +0100
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-24 00:17 +1100
                Re: Can i rely on >BODY for anything at all? Coos Haak <chforth@hccnet.nl> - 2013-03-23 15:10 +0100
                Re: Can i rely on >BODY for anything at all? Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-24 01:25 +0100
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-26 12:55 +1100
                Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-26 05:51 -0500
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-28 23:31 +1100
                Re: Can i rely on >BODY for anything at all? stephenXXX@mpeforth.com (Stephen Pelc) - 2013-03-28 12:57 +0000
                Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-28 08:15 -0500
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-30 12:56 +1100
                Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-30 04:56 -0500
                Re: Can i rely on >BODY for anything at all? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-03-30 10:32 +0000
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-04-04 12:36 +1000
                Re: Can i rely on >BODY for anything at all? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-03-28 17:39 +0000
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-28 21:32 +1100
                Re: Can i rely on >BODY for anything at all? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-03-28 11:58 +0000
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-29 00:59 +1100
                Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-28 08:41 -1000
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-30 12:43 +1100
                Re: Can i rely on >BODY for anything at all? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-03-27 17:15 +0000
                Re: Can i rely on >BODY for anything at all? Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-27 22:04 +0100
                Re: Can i rely on >BODY for anything at all? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-03-28 12:17 +0000
                Re: Can i rely on >BODY for anything at all? "Ed" <invalid@nospam.com> - 2013-03-26 13:13 +1100
                Re: Can i rely on >BODY for anything at all? Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-24 01:21 +0100
    Re: Can i rely on >BODY for anything at all? Mark Wills <markrobertwills@yahoo.co.uk> - 2013-03-20 00:01 -0700
      Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-19 22:02 -1000
  Re: Can i rely on >BODY for anything at all? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-03-20 05:27 -0400
    Re: Can i rely on >BODY for anything at all? Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-20 10:27 +0000
      Re: Can i rely on >BODY for anything at all? Mark Wills <markrobertwills@yahoo.co.uk> - 2013-03-20 03:23 -0700
        Re: Can i rely on >BODY for anything at all? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-03-20 17:22 +0000
      Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-20 07:52 -1000
        Re: Can i rely on >BODY for anything at all? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2013-03-20 18:56 +0000
        OT: SF-translations Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-20 21:44 +0000
          Re: OT: SF-translations Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-20 23:12 +0100
            Re: OT: SF-translations Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-20 22:45 +0000
              Re: OT: SF-translations Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-21 15:50 +0100
          Re: OT: SF-translations "Elizabeth D. Rather" <erather@forth.com> - 2013-03-20 12:38 -1000
        Re: Can i rely on >BODY for anything at all? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-03-21 05:52 -0400
          Re: Can i rely on >BODY for anything at all? Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-21 10:08 +0000
          Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-21 08:17 -1000
            Re: Can i rely on >BODY for anything at all? Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-21 18:46 +0000
            Re: Can i rely on >BODY for anything at all? mhx@iae.nl (Marcel Hendrix) - 2013-03-21 20:20 +0200
              Re: Can i rely on >BODY for anything at all? Brad Eckert <hwfwguy@gmail.com> - 2013-03-22 08:41 -0700
                Re: Can i rely on >BODY for anything at all? m.a.m.hendrix@tue.nl - 2013-03-22 09:03 -0700
                Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-22 08:05 -1000
                Re: Can i rely on >BODY for anything at all? Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-22 22:17 +0100
                Re: Can i rely on >BODY for anything at all? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-03-23 12:07 +0000
                Re: Can i rely on >BODY for anything at all? Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-24 01:40 +0100
                Re: Can i rely on >BODY for anything at all? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-03-24 03:55 -0500
                Re: Can i rely on >BODY for anything at all? stephenXXX@mpeforth.com (Stephen Pelc) - 2013-03-24 12:18 +0000
                Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-24 06:04 -0700
                Re: Can i rely on >BODY for anything at all? Bernd Paysan <bernd.paysan@gmx.de> - 2013-03-24 15:31 +0100
                Re: Can i rely on >BODY for anything at all? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-03-23 02:26 +0000
                Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-22 17:39 -1000
      Re: Can i rely on >BODY for anything at all? Coos Haak <chforth@hccnet.nl> - 2013-03-20 19:18 +0100
        Re: Can i rely on >BODY for anything at all? Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-21 16:18 +0000
          Re: Can i rely on >BODY for anything at all? Coos Haak <chforth@hccnet.nl> - 2013-03-22 00:34 +0100
            Re: Can i rely on >BODY for anything at all? Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-03-21 23:54 +0000
              Re: Can i rely on >BODY for anything at all? Coos Haak <chforth@hccnet.nl> - 2013-03-22 00:54 +0100
              Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-21 14:37 -1000
    Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-20 04:48 -0700
      Re: Can i rely on >BODY for anything at all? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-03-21 05:43 -0400
        Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-21 08:30 -0700
          Re: Can i rely on >BODY for anything at all? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-03-22 03:31 -0400
            Re: Can i rely on >BODY for anything at all? "Elizabeth D. Rather" <erather@forth.com> - 2013-03-21 22:07 -1000
            Re: Can i rely on >BODY for anything at all? Alex McDonald <blog@rivadpm.com> - 2013-03-22 03:37 -0700
    Re: Can i rely on >BODY for anything at all? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-03-20 17:14 +0000

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