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Groups > comp.lang.forth > #48753

Re: RfD: new double syntax

From anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups comp.lang.forth
Subject Re: RfD: new double syntax
Date 2016-07-03 15:02 +0000
Organization Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID <2016Jul3.170251@mips.complang.tuwien.ac.at> (permalink)
References <2016Jul1.191836@mips.complang.tuwien.ac.at> <2016Jul2.193202@mips.complang.tuwien.ac.at> <ed1f1f49-f6c3-414f-b351-6f9d7fbb15e8@googlegroups.com>

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Julian Fondren <julian.fondren@gmail.com> writes:
>On Saturday, July 2, 2016 at 12:43:39 PM UTC-5, Anton Ertl wrote:
>> 
>> Bernd Paysan suggested an alternative solution: Just make unprefixed
>> doubles obsolescent (and eventually non-standard), but instead of
>> adding a new prefix for doubles, just require one of the existing
>> prefixes if you want to write a double.  I.e.,:
>> 
>> 1.  \ proposed obsolescent, eventually non-standard
>> #1. \ double
>> $1. \ double
>> %1. \ double
>> 
>> That should satisfy those who object to the "*1" syntax on aesthetic
>> reasons.  It also has the advantage that people can start converting
>> without first having to wait for systems that support "*1"; the "#1."
>> syntax is already supported.
>> 
>
>Part of the reply I was coming up with was: why not have your students
>use a version of gforth that disables doubles?  Bernd's suggestion is
>even better.  You can require that people load a library first that
>changes the recognizer stack to disable unprefixed doubles, and then
>bring this up -- and why you're doing it -- at some point.

How do you imagine I can require that of my students?  They install
Gforth from somewhere, and the run it.  If it is not there on startup,
teaching them to reliably type "gforth student-setup.fs" or something
is going to cost about as much time as teaching them about "1." in the
first place, and is equally unproductive.

>Why does it need to remain a problem of the standard?

Are my students the only newcomers we are expecting in the Forth
community?  My students at least have me to ask why their program that
uses "1." is not working as they expected; many others are on their
own.

- 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 2016: http://www.euroforth.org/ef16/

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Thread

RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-01 17:18 +0000
  Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-01 11:45 -0700
    Re: RfD: new double syntax rickman <gnuarm@gmail.com> - 2016-07-01 14:46 -0400
  Re: RfD: new double syntax Julian Fondren <julian.fondren@gmail.com> - 2016-07-01 11:47 -0700
    Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-02 14:54 +0000
  Re: RfD: new double syntax mhx@iae.nl - 2016-07-01 11:48 -0700
    Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-02 14:52 +0000
  Re: RfD: new double syntax "Elizabeth D. Rather" <erather@forth.com> - 2016-07-01 09:10 -1000
    Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-01 19:10 -0700
      Re: RfD: new double syntax "WJ" <w_a_x_man@yahoo.com> - 2016-07-02 06:23 +0000
  RfD: new double syntax krishna.myneni@ccreweb.org - 2016-07-01 20:54 -0700
    RfD: new double syntax krishna.myneni@ccreweb.org - 2016-07-01 21:18 -0700
      Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-01 22:26 -0700
        Re: RfD: new double syntax "WJ" <w_a_x_man@yahoo.com> - 2016-07-02 22:32 +0000
          Re: RfD: new double syntax rickman <gnuarm@gmail.com> - 2016-07-03 01:16 -0400
            Re: RfD: new double syntax Ron Aaron <rambamist@gmail.com> - 2016-07-03 08:34 +0300
              Re: RfD: new double syntax rickman <gnuarm@gmail.com> - 2016-07-03 03:00 -0400
                Re: RfD: new double syntax Ron Aaron <rambamist@gmail.com> - 2016-07-03 10:20 +0300
                Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-03 08:29 +0000
            Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-02 23:10 -0700
              Re: RfD: new double syntax Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-07-02 23:20 -0700
                Re: RfD: new double syntax rickman <gnuarm@gmail.com> - 2016-07-03 03:02 -0400
      Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-02 14:20 +0000
    Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-02 14:11 +0000
  Re: RfD: new double syntax josv@planet.nl - 2016-07-02 00:26 -0700
    Re: RfD: new double syntax "Elizabeth D. Rather" <erather@forth.com> - 2016-07-01 22:22 -1000
      Re: RfD: new double syntax "HAA" <someone@microsoft.com> - 2016-07-02 22:02 +1000
        Re: RfD: new double syntax "Elizabeth D. Rather" <erather@forth.com> - 2016-07-02 11:19 -1000
    Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-02 14:02 +0000
  Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-02 04:03 -0500
    Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-02 13:44 +0000
      Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-02 07:38 -0700
        Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-02 07:42 -0700
        Re: RfD: new double syntax "WJ" <w_a_x_man@yahoo.com> - 2016-07-02 22:44 +0000
      Re: RfD: new double syntax Cecil Bayona <cbayona@cbayona.com> - 2016-07-02 09:58 -0500
      Re: RfD: new double syntax "Elizabeth D. Rather" <erather@forth.com> - 2016-07-02 11:32 -1000
      Re: RfD: new double syntax "WJ" <w_a_x_man@yahoo.com> - 2016-07-03 00:27 +0000
      Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-04 08:05 -0700
      Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-04 03:50 -0500
        Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-04 03:53 -0500
  Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-02 17:32 +0000
    Re: RfD: new double syntax Julian Fondren <julian.fondren@gmail.com> - 2016-07-02 10:52 -0700
      Re: RfD: new double syntax krishna.myneni@ccreweb.org - 2016-07-02 13:03 -0700
      Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-03 15:02 +0000
        Re: RfD: new double syntax Julian Fondren <julian.fondren@gmail.com> - 2016-07-03 11:18 -0700
          Re: RfD: new double syntax Coos Haak <chforth@hccnet.nl> - 2016-07-03 21:19 +0200
    Re: RfD: new double syntax Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-07-03 11:36 +0100
      Re: RfD: new double syntax Gerard Sontag <gerardsontag@gmail.com> - 2016-07-03 06:58 -0700
        Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-03 14:21 +0000
          Re: RfD: new double syntax Gerard Sontag <gerardsontag@gmail.com> - 2016-07-03 07:55 -0700
          Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-03 08:08 -0700
            Dealing with multiple recognizers (was: RfD: new double syntax) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-03 15:13 +0000
              Re: Dealing with multiple recognizers (was: RfD: new double syntax) hughaguilar96@gmail.com - 2016-07-03 09:57 -0700
          Re: RfD: new double syntax rickman <gnuarm@gmail.com> - 2016-07-05 01:12 -0400
            Re: RfD: new double syntax Gerard Sontag <gerardsontag@gmail.com> - 2016-07-05 07:56 -0700
              Re: RfD: new double syntax rickman <gnuarm@gmail.com> - 2016-07-05 11:18 -0400
        Re: RfD: new double syntax JennyB <jennybrien@googlemail.com> - 2016-07-03 08:15 -0700
        Re: RfD: new double syntax Cecil Bayona <cbayona@cbayona.com> - 2016-07-03 12:42 -0500
          Re: RfD: new double syntax "Elizabeth D. Rather" <erather@forth.com> - 2016-07-03 09:32 -1000
            Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-04 07:34 -0700
          Re: RfD: new double syntax Julian Fondren <julian.fondren@gmail.com> - 2016-07-04 10:35 -0700
          Re: RfD: new double syntax Julian Fondren <julian.fondren@gmail.com> - 2016-07-04 09:00 -0700
            Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-07-04 09:51 -0700
          Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-04 11:20 -0500
            Re: RfD: new double syntax Howerd <howerdo@yahoo.co.uk> - 2016-07-06 04:08 -0700
              Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-06 06:24 -0500
                Re: RfD: new double syntax Alex McDonald <alex@rivadpm.com> - 2016-07-06 12:38 +0100
                Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-06 06:46 -0500
                Re: RfD: new double syntax Howerd <howerdo@yahoo.co.uk> - 2016-07-06 13:37 -0700
                Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-07 03:28 -0500
                Re: RfD: new double syntax Bernd Paysan <bernd.paysan@gmx.de> - 2016-08-04 23:59 +0000
                Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-08-04 19:26 -0500
                Re: RfD: new double syntax Paul Rubin <no.email@nospam.invalid> - 2016-08-04 17:34 -0700
                Re: RfD: new double syntax franck.bensusan@gmail.com - 2016-08-05 02:57 -0700
                Re: RfD: new double syntax Paul Rubin <no.email@nospam.invalid> - 2016-08-05 13:15 -0700
                Re: RfD: new double syntax franck.bensusan@gmail.com - 2016-08-06 01:56 -0700
                Re: RfD: new double syntax Paul Rubin <no.email@nospam.invalid> - 2016-08-07 17:22 -0700
                Re: RfD: new double syntax franck.bensusan@gmail.com - 2016-08-08 04:56 -0700
                Re: RfD: new double syntax josv@planet.nl - 2016-08-08 08:50 -0700
                Re: RfD: new double syntax franck.bensusan@gmail.com - 2016-08-08 12:26 -0700
                Re: RfD: new double syntax josv@planet.nl - 2016-08-08 15:41 -0700
                Re: RfD: new double syntax mhx@iae.nl - 2016-08-08 23:06 -0700
                Re: RfD: new double syntax josv@planet.nl - 2016-08-09 00:57 -0700
                Re: RfD: new double syntax franck.bensusan@gmail.com - 2016-08-09 03:05 -0700
                Re: RfD: new double syntax hughaguilar96@gmail.com - 2016-08-10 01:46 -0700
                Re: RfD: new double syntax Paul Rubin <no.email@nospam.invalid> - 2016-08-10 19:07 -0700
                Re: RfD: new double syntax franck.bensusan@gmail.com - 2016-08-11 05:24 -0700
                Re: RfD: new double syntax josv@planet.nl - 2016-08-06 04:50 -0700
                Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-08-05 12:01 -0500
          Re: RfD: new double syntax Cecil Bayona <cbayona@cbayona.com> - 2016-07-04 08:51 -0500
          Re: RfD: new double syntax Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-04 04:03 -0500
      Re: RfD: new double syntax anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-03 14:56 +0000
        Re: RfD: new double syntax Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-07-03 22:00 +0100

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