Re: Array of Constants in Mecrisp

Date	2015-05-15 09:28 -1000
From	"Elizabeth D. Rather" <erather@forth.com>
Organization	FORTH, Inc.
Newsgroups	comp.lang.forth
Subject	Re: Array of Constants in Mecrisp
References	(5 earlier) <mj2kh6$i5f$1@dont-email.me> <mj2leq$m34$1@dont-email.me> <2015May15.092635@mips.complang.tuwien.ac.at> <p_2dnXLIUqcNM8jInZ2dnUU7-IWdnZ2d@supernews.com> <2015May15.120345@mips.complang.tuwien.ac.at>
Message-ID	<2vadnU-Dubdf1cvInZ2dnUU7-Q-dnZ2d@supernews.com> (permalink)

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On 5/15/15 12:03 AM, Anton Ertl wrote:
> "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".

Actually, I believe it can. I don't have a full setup with target, etc., 
so I can't prove it, but it is certainly quite possible to create new 
definitions interactively, either in high level or code.

> 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.

Frankly, I can't think of a time when I wanted to change the behavior of 
an "already-DOES>ed word" but I have spent a lot of time working with 
targets under development, and cannot think of anything I wanted to do 
but couldn't.

Cheers,
Elizabeth

-- 
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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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