Re: Array of Constants in Mecrisp

From	anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups	comp.lang.forth
Subject	Re: Array of Constants in Mecrisp
Date	2015-05-15 10:03 +0000
Organization	Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID	<2015May15.120345@mips.complang.tuwien.ac.at> (permalink)
References	(4 earlier) <mj2k9g$gcu$2@dont-email.me> <mj2kh6$i5f$1@dont-email.me> <mj2leq$m34$1@dont-email.me> <2015May15.092635@mips.complang.tuwien.ac.at> <p_2dnXLIUqcNM8jInZ2dnUU7-IWdnZ2d@supernews.com>

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"Elizabeth D. Rather" <erather@forth.com> writes:
>On 5/14/15 9:26 PM, Anton Ertl wrote:
>> And this is the problem if the code field is in flash: overwriting is
>> not easily possible.  Native-code compilers also implement this with
>> an overwritable field and have the same problem.
>
>But interactive cross-compilers have no problem, because they generate a 
>target image in host (e.g. PC) RAM, download it, and then establish the 
>interactive link to it.

A compiler that works like that cannot process the standard code

: doesa does> drop ." a" ;
: doesb does> drop ." b" ;
create foo
doesa
foo \ prints "a"
doesb
foo \ prints "b"
doesa
foo \ prints "a" again

Probably too interactive for this kind of "interactive
cross-compiler".

In any case, there are a number of systems that do not want to impose
such restrictions, and for the CREATE...DOES> design is a problem.
They tend not to support the usage above, either (changing an
already-DOES>ed word is rare anyway), but the two-step approach (first
CREATE a word, then change it with DOES>) creates headaches already.
And these headaches would be easy to avoid with a one-step interface.

- 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 2015: http://www.mpeforth.com/euroforth2015/euroforth2015.htm

Thread

Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-10 11:06 -0400
  Array of Constants in Mecrisp Mark Wills <markwills1970@gmail.com> - 2015-05-10 09:02 -0700
    Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-10 15:50 -0400
      Re: Array of Constants in Mecrisp Mark Wills <markwills1970@gmail.com> - 2015-05-11 00:38 -0700
      Re: Array of Constants in Mecrisp Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2015-05-11 12:10 +0200
        Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-11 11:24 -0400
          Re: Array of Constants in Mecrisp Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2015-05-12 13:03 +0200
        Re: Array of Constants in Mecrisp albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-11 23:19 +0000
          Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-11 20:47 -0400
            Re: Array of Constants in Mecrisp albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-12 17:05 +0000
          Re: Array of Constants in Mecrisp Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2015-05-12 12:49 +0200
        Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-14 13:00 -0400
          Re: Array of Constants in Mecrisp "Alex McDonald" <blog@rivadpm.com> - 2015-05-14 18:04 +0100
            Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-14 13:20 -0400
              Re: Array of Constants in Mecrisp "Alex McDonald" <blog@rivadpm.com> - 2015-05-14 18:46 +0100
              Re: Array of Constants in Mecrisp Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-14 20:42 +0200
                Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-15 11:25 -0400
              Re: Array of Constants in Mecrisp "Elizabeth D. Rather" <erather@forth.com> - 2015-05-14 09:11 -1000
              Re: Array of Constants in Mecrisp anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-15 07:26 +0000
                Re: Array of Constants in Mecrisp "Elizabeth D. Rather" <erather@forth.com> - 2015-05-14 22:30 -1000
                Re: Array of Constants in Mecrisp anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-15 10:03 +0000
                Re: Array of Constants in Mecrisp albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-15 11:05 +0000
                Re: Array of Constants in Mecrisp anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-15 12:51 +0000
                Re: Array of Constants in Mecrisp albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-15 15:40 +0000
                Re: Array of Constants in Mecrisp anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-16 13:40 +0000
                Re: Array of Constants in Mecrisp "Elizabeth D. Rather" <erather@forth.com> - 2015-05-16 11:25 -1000
                Re: Array of Constants in Mecrisp "Elizabeth D. Rather" <erather@forth.com> - 2015-05-15 09:28 -1000
              Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-15 11:31 -0400
                Re: Array of Constants in Mecrisp "Elizabeth D. Rather" <erather@forth.com> - 2015-05-15 09:31 -1000
                Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-16 10:00 -0400
                Re: Array of Constants in Mecrisp anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-16 16:12 +0000
                Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-16 13:58 -0400
                Re: Array of Constants in Mecrisp anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-16 18:03 +0000
                Re: Array of Constants in Mecrisp Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-18 00:36 +0200
                Re: Array of Constants in Mecrisp Lars Brinkhoff <lars.spam@nocrew.org> - 2015-05-18 08:37 +0200
                Re: Array of Constants in Mecrisp Coos Haak <chforth@hccnet.nl> - 2015-05-18 12:55 +0200
                Re: Array of Constants in Mecrisp Lars Brinkhoff <lars.spam@nocrew.org> - 2015-05-18 13:44 +0200
                Re: Array of Constants in Mecrisp albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-19 00:17 +0000
                Re: Array of Constants in Mecrisp "Elizabeth D. Rather" <erather@forth.com> - 2015-05-16 11:36 -1000
                Re: Array of Constants in Mecrisp "Elizabeth D. Rather" <erather@forth.com> - 2015-05-16 11:27 -1000
            Re: Array of Constants in Mecrisp albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-15 10:48 +0000
  Re: Array of Constants in Mecrisp Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2015-05-11 12:06 +0200
    Re: Array of Constants in Mecrisp Mark Wills <markwills1970@gmail.com> - 2015-05-11 04:48 -0700
      Re: Array of Constants in Mecrisp Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2015-05-12 12:39 +0200
        Re: Array of Constants in Mecrisp foxaudioresearch@gmail.com - 2015-05-12 16:29 -0700
    Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-14 13:05 -0400
      Re: Array of Constants in Mecrisp Coos Haak <chforth@hccnet.nl> - 2015-05-14 22:21 +0200
        Re: Array of Constants in Mecrisp rickman <gnuarm@gmail.com> - 2015-05-15 11:27 -0400

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