Re: FORTH LITE TUTORIAL based on MPE VFX

From	Ron Aaron <rambamist@gmail.com>
Newsgroups	comp.lang.forth
Subject	Re: FORTH LITE TUTORIAL based on MPE VFX
Date	2014-06-25 21:03 +0300
Organization	A noiseless patient Spider
Message-ID	<lof2t6$bk2$1@dont-email.me> (permalink)
References	(6 earlier) <bZKdnaJwUcPBGDfOnZ2dnUVZ_tWdnZ2d@supernews.com> <loe3i0$2oa$1@dont-email.me> <2014Jun25.160804@mips.complang.tuwien.ac.at> <loeseh$ofe$1@dont-email.me> <2014Jun25.191458@mips.complang.tuwien.ac.at>

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On 06/25/2014 08:14 PM, Anton Ertl wrote:

> For string constants, yes.  In general, no.  E.g., if I select a
> (non-trailing) substring to pass to a library function, it will not be
> zero-terminated.

Everything you say is true; most especially regarding the cost of
calling the OS vs the cost of appending a NUL byte etc.  That argument
is somewhat less true when calling a simple library expecting a C string
where there is no context-switch, but it is still pretty accurate.

> That's exactly the reason why there is an interface word that provides
> a Forth interface, and that does the conversion internally before
> calling the C function.

Actually I do the same...

>> And it only costs one
>> byte extra per string.
>
> Well, if all strings (not just constants) have the trailing 0, it
> costs the ability to produce substrings by manipulation address and
> count.  In that case it costs more bytes, and the time needed for
> allocating the space for the substring and for copying it.

I see your point clearly.  The difference is that in my system you
cannot have a substring which merely points into another string, while
you can in std Forths.   If you ask for a substring in mine, you get a
separate string item (which keeps track of length, and automatically
takes care of memory if you append to it, etc).  So since I anyway do a
bunch of housekeeping on my strings, it costs me nothing more to ensure
a NUL termination.  This has the added benefit in my system that
internals don't have to do any conversions when calling out (nor do FFI
routines).

Best regards,
Ron

Thread

FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-06-15 07:06 -0700
  Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-06-15 08:48 -0700
    Re: FORTH LITE TUTORIAL based on MPE VFX Paul E Bennett <Paul_E.Bennett@topmail.co.uk> - 2014-06-15 23:43 +0100
    Re: FORTH LITE TUTORIAL based on MPE VFX rickman <gnuarm@gmail.com> - 2014-06-15 19:44 -0400
      Re: FORTH LITE TUTORIAL based on MPE VFX Bernd Paysan <bernd.paysan@gmx.de> - 2014-06-16 02:21 +0200
      Re: FORTH LITE TUTORIAL based on MPE VFX Paul E Bennett <Paul_E.Bennett@topmail.co.uk> - 2014-06-16 09:26 +0100
        Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-06-17 04:06 -0700
  Re: FORTH LITE TUTORIAL based on MPE VFX rickman <gnuarm@gmail.com> - 2014-06-15 19:39 -0400
  Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-06-15 23:01 -0700
  Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-17 09:27 -0700
    Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-17 20:12 -0700
      Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-17 21:15 -0700
        Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-17 22:34 -0700
          Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-17 23:11 -0700
            Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-18 16:57 -0700
              Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-06-20 05:03 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-20 14:56 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-20 17:03 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-20 17:53 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-21 10:57 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-21 11:06 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-21 13:30 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-21 11:58 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-21 14:22 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-21 20:13 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-21 21:54 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX bruce.mcfarling@gmail.com - 2014-06-21 22:31 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Andrew Haley <andrew29@littlepinkcloud.invalid> - 2014-06-22 05:31 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-22 07:04 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-22 18:02 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX Bernd Paysan <bernd.paysan@gmx.de> - 2014-06-23 02:53 +0200
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-22 20:29 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-06-22 13:40 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-22 12:08 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX november.nihal@gmail.com - 2014-06-22 16:03 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-22 20:30 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-26 15:17 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-26 15:51 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-26 22:49 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-27 07:32 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-27 23:01 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-28 06:59 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Julian Fondren <julian.fondren@gmail.com> - 2014-06-28 08:07 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-28 08:34 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-28 07:23 -1000
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-28 22:46 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-07-27 02:06 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Raimond Dragomir <raimond.dragomir@gmail.com> - 2014-07-28 07:31 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-07-28 11:23 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-07-28 19:21 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX Raimond Dragomir <raimond.dragomir@gmail.com> - 2014-07-28 20:59 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX visualforth@rocketmail.com - 2014-07-29 11:10 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX stephenXXX@mpeforth.com (Stephen Pelc) - 2014-07-29 09:45 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX Raimond Dragomir <raimond.dragomir@gmail.com> - 2014-07-29 07:44 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX stephenXXX@mpeforth.com (Stephen Pelc) - 2014-07-29 17:48 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-07-29 11:14 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX mhx@iae.nl - 2014-07-29 12:57 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-07-29 18:36 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Raimond Dragomir <raimond.dragomir@gmail.com> - 2014-07-29 20:38 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-07-29 21:43 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Raimond Dragomir <raimond.dragomir@gmail.com> - 2014-07-29 23:05 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-07-30 22:20 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Raimond Dragomir <raimond.dragomir@gmail.com> - 2014-07-31 00:19 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Mark Wills <markwills1970@gmail.com> - 2014-07-30 01:41 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-07-30 21:42 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Mark Wills <markwills1970@gmail.com> - 2014-07-31 01:08 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-07-31 20:25 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Mark Wills <markwills1970@gmail.com> - 2014-08-01 02:23 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Lars Brinkhoff <lars.spam@nocrew.org> - 2014-08-01 12:54 +0200
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-08-01 19:57 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Andrew Haley <andrew29@littlepinkcloud.invalid> - 2014-08-02 04:18 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-07-27 02:14 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX bruce.mcfarling@gmail.com - 2014-06-21 21:59 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-06-21 22:36 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-21 22:44 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Julian Fondren <julian.fondren@gmail.com> - 2014-06-22 02:26 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-22 07:41 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-22 07:43 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-22 19:57 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-24 21:04 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-24 15:21 -1000
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-25 18:21 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Andrew Haley <andrew29@littlepinkcloud.invalid> - 2014-06-25 03:16 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX Ron Aaron <rambamist@gmail.com> - 2014-06-25 12:08 +0300
                Re: FORTH LITE TUTORIAL based on MPE VFX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-06-25 14:08 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX Ron Aaron <rambamist@gmail.com> - 2014-06-25 19:13 +0300
                Re: FORTH LITE TUTORIAL based on MPE VFX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-06-25 17:14 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX Ron Aaron <rambamist@gmail.com> - 2014-06-25 21:03 +0300
                Re: FORTH LITE TUTORIAL based on MPE VFX albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-06-26 12:13 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-06-25 16:14 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-06-25 17:27 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-25 18:24 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Andrew Haley <andrew29@littlepinkcloud.invalid> - 2014-06-26 03:27 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-26 17:50 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Andrew Haley <andrew29@littlepinkcloud.invalid> - 2014-06-27 03:13 -0500
                Re: FORTH LITE TUTORIAL based on MPE VFX albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-06-27 12:30 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX Mark Wills <markwills1970@gmail.com> - 2014-06-25 03:46 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-06-25 16:15 +0000
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-25 13:19 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-25 18:52 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Alexander Skobelev <al.skobelev@gmail.com> - 2014-06-26 10:45 +0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Ron Aaron <rambamist@gmail.com> - 2014-06-26 09:56 +0300
                Re: FORTH LITE TUTORIAL based on MPE VFX Alexander Skobelev <al.skobelev@gmail.com> - 2014-06-26 11:30 +0400
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-25 18:38 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-25 20:49 -1000
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-26 17:54 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX David Thompson <dave.thompson2@verizon.net> - 2014-07-26 21:53 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Julian Fondren <ayrnieu@gmail.com> - 2014-06-22 22:22 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-23 07:31 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-24 17:05 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-24 20:55 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-24 19:52 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-25 13:09 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX humptydumpty <ouatubi@gmail.com> - 2014-06-23 00:17 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX humptydumpty <ouatubi@gmail.com> - 2014-06-23 00:27 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-23 07:45 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-23 07:54 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX humptydumpty <ouatubi@gmail.com> - 2014-06-24 00:56 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Bernd Paysan <bernd.paysan@gmx.de> - 2014-06-27 03:33 +0200
          Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-25 18:20 -0700
            Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-25 18:50 -0700
              Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-25 20:00 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-25 23:02 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX Paul E Bennett <Paul_E.Bennett@topmail.co.uk> - 2014-06-26 10:28 +0100
                Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-26 07:56 -0700
                Re: FORTH LITE TUTORIAL based on MPE VFX "Elizabeth D. Rather" <erather@forth.com> - 2014-06-26 07:59 -1000
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-26 17:33 -0400
                Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-26 17:26 -0400
            Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-26 17:22 -0400
      Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-18 22:07 -0400
        Re: FORTH LITE TUTORIAL based on MPE VFX Julian Fondren <julian.fondren@gmail.com> - 2014-06-18 19:28 -0700
          Re: FORTH LITE TUTORIAL based on MPE VFX mhx@iae.nl - 2014-06-18 23:09 -0700
        Re: FORTH LITE TUTORIAL based on MPE VFX hughaguilar96@yahoo.com - 2014-06-18 20:02 -0700
          Re: FORTH LITE TUTORIAL based on MPE VFX "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-06-19 18:28 -0400
    Re: FORTH LITE TUTORIAL based on MPE VFX Julian Fondren <julian.fondren@gmail.com> - 2014-06-17 21:01 -0700
      Re: FORTH LITE TUTORIAL based on MPE VFX mhx@iae.nl - 2014-06-17 23:01 -0700
  Re: FORTH LITE TUTORIAL based on MPE VFX jyf <jyf1987@gmail.com> - 2014-06-19 22:13 -0700
    Re: FORTH LITE TUTORIAL based on MPE VFX Roger Levy <roger.levy@gmail.com> - 2014-06-19 22:34 -0700
  Re: FORTH LITE TUTORIAL based on MPE VFX brelliott18@hotmail.com - 2014-08-10 09:15 -0700
    Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-08-11 14:31 -0700
      Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-08-11 23:51 -0700
        Re: FORTH LITE TUTORIAL based on MPE VFX brelliott18@hotmail.com - 2014-08-12 03:14 -0700
          Re: FORTH LITE TUTORIAL based on MPE VFX JUERGEN <epldfpga@aol.com> - 2014-08-12 03:51 -0700

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