Re: Is this example in the Forth200x draft 11.1 correct?

From	anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups	comp.lang.forth
Subject	Re: Is this example in the Forth200x draft 11.1 correct?
Date	2012-08-08 07:42 +0000
Organization	Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID	<2012Aug8.094212@mips.complang.tuwien.ac.at> (permalink)
References	<jvhbrh$ca8$1@speranza.aioe.org> <abdc063b-a1be-4839-8724-cd10f8fa37b8@nc9g2000pbc.googlegroups.com> <jvqlka$79p$1@speranza.aioe.org> <2012Aug7.161823@mips.complang.tuwien.ac.at> <9sudnYJa3YPjS7zNnZ2dnUVZ_qSdnZ2d@supernews.com>

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Elizabeth D Rather <erather@forth.com> writes:
>On 8/7/2012 9:18 AM, Anton Ertl wrote:
>> There is a potential fundamental inefficiency in CREATE..DOES>-defined
>> words: Any implementation has to cater for the ability to modify the
>> data.  Consider:
>>
>> : constant create , does>  @ ;
>> 5 constant x
>> : foo x ;
>
>I don't see that as an inefficiency in CREATE ... DOES>, it's a reason 
>why that is a poor way to define a CONSTANT (although it makes a good 
>example for didactic purposes).

Maybe.  I know a standard way that does not have that fundamental
inefficiency and produces faster, but bigger constants.  But that way
is not presented in most Forth texts.  Why not?

How would you define CONSTANT in standard Forth?

- anton
-- 
M. Anton Ertl  http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
     New standard: http://www.forth200x.org/forth200x.html
   EuroForth 2012: http://www.euroforth.org/ef12/

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Is this example in the Forth200x draft 11.1 correct? "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-08-03 16:23 -0400
  Is this example in the Forth200x draft 11.1 correct? Mark Wills <markrobertwills@yahoo.co.uk> - 2012-08-03 13:49 -0700
  Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-03 23:07 +0200
    Re: Is this example in the Forth200x draft 11.1 correct? "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-08-03 18:28 -0400
      Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-04 02:49 +0200
        Re: Is this example in the Forth200x draft 11.1 correct? "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-08-04 04:33 -0400
          Re: Is this example in the Forth200x draft 11.1 correct? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-08-04 04:37 -0500
  Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-06 21:27 -0700
    Re: Is this example in the Forth200x draft 11.1 correct? Howerd <howerdo@yahoo.co.uk> - 2012-08-07 00:04 -0700
    Re: Is this example in the Forth200x draft 11.1 correct? "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-08-07 05:05 -0400
      Re: Is this example in the Forth200x draft 11.1 correct? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-07 14:18 +0000
        Re: Is this example in the Forth200x draft 11.1 correct? Alex McDonald <blog@rivadpm.com> - 2012-08-07 09:39 -0700
          Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-07 20:20 +0200
            Re: Is this example in the Forth200x draft 11.1 correct? Alex McDonald <blog@rivadpm.com> - 2012-08-07 12:31 -0700
              Re: Is this example in the Forth200x draft 11.1 correct? Alex McDonald <blog@rivadpm.com> - 2012-08-07 13:26 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-08 00:49 +0200
            Re: Is this example in the Forth200x draft 11.1 correct? Alex McDonald <blog@rivadpm.com> - 2012-08-07 12:33 -0700
          Re: Is this example in the Forth200x draft 11.1 correct? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-08 07:21 +0000
          Re: Is this example in the Forth200x draft 11.1 correct? Mark Wills <markrobertwills@yahoo.co.uk> - 2012-08-08 01:12 -0700
            Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-08 19:11 +0200
        Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-07 19:29 -0700
        Re: Is this example in the Forth200x draft 11.1 correct? Elizabeth D Rather <erather@forth.com> - 2012-08-07 22:01 -0500
          Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-07 20:07 -0700
            Re: Is this example in the Forth200x draft 11.1 correct? Elizabeth D Rather <erather@forth.com> - 2012-08-07 23:03 -0500
          Re: Is this example in the Forth200x draft 11.1 correct? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-08 07:42 +0000
            Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-08 18:12 -0700
              Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-08 18:59 -0700
              Re: Is this example in the Forth200x draft 11.1 correct? Mark Wills <markrobertwills@yahoo.co.uk> - 2012-08-09 02:30 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-09 09:48 +0000
                Re: Is this example in the Forth200x draft 11.1 correct? Percy <percival.andrews@gmail.com> - 2012-08-10 06:33 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? "David N. Williams" <williams@umich.edu> - 2012-08-10 09:58 -0400
                Re: Is this example in the Forth200x draft 11.1 correct? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-10 15:39 +0000
                Re: Is this example in the Forth200x draft 11.1 correct? "David N. Williams" <williams@umich.edu> - 2012-08-10 16:15 -0400
                Re: Is this example in the Forth200x draft 11.1 correct? percival.andrews@gmail.com - 2012-08-10 16:42 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? Coos Haak <chforth@hccnet.nl> - 2012-08-11 01:51 +0200
                Re: Is this example in the Forth200x draft 11.1 correct? George Hubert <georgeahubert@yahoo.co.uk> - 2012-08-11 06:25 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-11 09:12 +0000
                Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-13 14:28 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-14 00:51 +0200
                Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-13 16:24 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-14 03:25 +0200
                Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-14 07:54 -0700
                Re: Is this example in the Forth200x draft 11.1 correct? Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-14 23:22 +0200
                Re: Is this example in the Forth200x draft 11.1 correct? hughaguilar96@yahoo.com - 2012-08-16 00:37 -0700
      Re: Is this example in the Forth200x draft 11.1 correct? Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-08-07 19:30 -0700

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