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Groups > comp.lang.forth > #50614
| From | anton@mips.complang.tuwien.ac.at (Anton Ertl) |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Rosetta Code: Catamorphism |
| Date | 2016-09-02 11:45 +0000 |
| Organization | Institut fuer Computersprachen, Technische Universitaet Wien |
| Message-ID | <2016Sep2.134548@mips.complang.tuwien.ac.at> (permalink) |
| References | <npkec6$gnu$1@dont-email.me> <836dda04-3aea-4e2f-83b1-574930d88525@googlegroups.com> <nq0ska$ktc$1@gioia.aioe.org> <28dcf035-a628-40d8-8981-3b591502ed92@googlegroups.com> <dr795zm8c0dq$.eexnumbwiaol.dlg@40tude.net> |
Coos Haak <htrofhc@gmail.com> writes:
>Op Thu, 1 Sep 2016 23:47:37 -0700 (PDT) schreef hughaguilar96@gmail.com:
><snip>
>>: test ]] s" Howdy!" [[ ; immediate
>> Err# -13 ERR: Undefined word.
>> -> : test ]] s" Howdy!" [[ ; immediate
>
>You stupid child, in essence you do the same as
>: test postpone s" Howdy!" ;
>You have learned that s" is a parsing word.
>You may compile it, but no real Forth programmer
>expects that it will compile the following string
>during the compilation of test.
Whatever a "real Forth programmer" may be.
The idea of S" is actually to behave in interpretation and compilation
state as if the string was part of the word (unlike, e.g., '). So you
can write
: foo s" abc" ;
s" abc"
and both will parse 'abc"' at parse time, and push the string
descriptor at run-time.
The idea of ]]...[[ is to provide something like a postpone state, so
ideally ]] s" abc" [[ should parse 'abc"' at parse time, and push the
descriptor at run-time, too. That does not work because of the
details of S" and ]]...[[, but ideally it would. And with the string
recognizer, it actually does (tested with the development version of
Gforth):
: test ]] "Howdy!" [[ ; immediate ok
: foo test ; ok
foo type Howdy! ok
- 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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Rosetta Code: Catamorphism "WJ" <w_a_x_man@yahoo.com> - 2016-08-24 15:27 +0000
Rosetta Code: Catamorphism Julian Fondren <julian.fondren@gmail.com> - 2016-08-24 12:43 -0700
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-25 09:53 +0000
Re: Rosetta Code: Catamorphism Julian Fondren <julian.fondren@gmail.com> - 2016-08-25 06:41 -0700
Re: Rosetta Code: Catamorphism Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-08-25 16:06 -0500
Re: Rosetta Code: Catamorphism foxaudioresearch@gmail.com - 2016-08-25 20:40 -0700
Rosetta Code ( was Re: Rosetta Code: Catamorphism) "HAA" <someone@microsoft.com> - 2016-08-29 12:06 +1000
Re: Rosetta Code ( was Re: Rosetta Code: Catamorphism) Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-08-29 01:41 -0500
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-27 10:01 +0000
Re: Rosetta Code: Catamorphism hughaguilar96@gmail.com - 2016-08-29 01:21 -0700
Re: Rosetta Code: Catamorphism hughaguilar96@gmail.com - 2016-08-29 01:36 -0700
Re: Rosetta Code: Catamorphism Julian Fondren <ayrnieu@gmail.com> - 2016-08-29 07:23 -0700
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-29 16:58 +0000
Re: Rosetta Code: Catamorphism peter.m.falth@gmail.com - 2016-08-29 13:15 -0700
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-29 20:53 +0000
Re: Rosetta Code: Catamorphism peter.m.falth@gmail.com - 2016-08-30 04:47 -0700
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-09-05 07:13 +0000
Re: Rosetta Code: Catamorphism "HAA" <someone@microsoft.com> - 2016-08-30 11:54 +1000
Re: Rosetta Code: Catamorphism "HAA" <someone@microsoft.com> - 2016-08-31 12:34 +1000
Re: Rosetta Code: Catamorphism "HAA" <someone@microsoft.com> - 2016-08-29 18:44 +1000
Re: Rosetta Code: Catamorphism hughaguilar96@gmail.com - 2016-09-01 23:47 -0700
Re: Rosetta Code: Catamorphism Coos Haak <htrofhc@gmail.com> - 2016-09-02 12:42 +0200
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-09-02 11:45 +0000
Re: Rosetta Code: Catamorphism Coos Haak <htrofhc@gmail.com> - 2016-09-02 15:01 +0200
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-09-02 16:04 +0000
Re: Rosetta Code: Catamorphism albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-09-02 16:23 +0200
Re: Rosetta Code: Catamorphism Bruce Axtens <bruce.axtens@gmail.com> - 2016-08-29 18:29 +0800
Re: Rosetta Code: Catamorphism Ron Aaron <rambamist@gmail.com> - 2016-08-29 13:41 +0300
Re: Rosetta Code: Catamorphism Bruce Axtens <bruce.axtens@gmail.com> - 2016-08-31 09:24 +0800
Standard or Forth? "HAA" <someone@microsoft.com> - 2016-09-01 13:45 +1000
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-02 21:54 -0700
Re: Standard or Forth? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-09-04 07:35 +0100
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-04 00:41 -0700
Re: Standard or Forth? Julian Fondren <julian.fondren@gmail.com> - 2016-09-04 02:55 -0700
Re: Standard or Forth? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-09-04 13:26 +0100
Re: Standard or Forth? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-09-04 13:59 +0000
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-04 23:09 -0700
Re: Standard or Forth? Ron Aaron <rambamist@gmail.com> - 2016-09-05 09:55 +0300
Re: Standard or Forth? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-09-05 08:39 +0100
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-04 01:25 -0700
Re: Standard or Forth? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-09-04 14:13 +0100
Re: Standard or Forth? Coos Haak <htrofhc@gmail.com> - 2016-09-04 23:16 +0200
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-04 22:33 -0700
Re: Standard or Forth? Ron Aaron <rambamist@gmail.com> - 2016-09-05 09:03 +0300
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-06 23:23 -0700
Re: Standard or Forth? Ron Aaron <rambamist@gmail.com> - 2016-09-07 10:14 +0300
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-07 01:01 -0700
Re: Standard or Forth? Ron Aaron <rambamist@gmail.com> - 2016-09-07 11:18 +0300
Re: Standard or Forth? Cecil Bayona <cbayona@cbayona.com> - 2016-09-07 08:47 -0500
Re: Standard or Forth? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-09-05 09:20 +0100
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-05 02:21 -0700
Re: Standard or Forth? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-09-05 08:10 +0000
Re: Standard or Forth? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-09-05 10:51 +0100
Re: Standard or Forth? "Elizabeth D. Rather" <erather@forth.com> - 2016-09-03 08:05 +0200
Re: Standard or Forth? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-09-03 03:00 -0500
Re: Standard or Forth? "HAA" <someone@microsoft.com> - 2016-09-03 22:48 +1000
Re: Standard or Forth? Alex <alex@rivadpm.com> - 2016-09-03 15:05 +0100
Re: Standard or Forth? Julian Fondren <julian.fondren@gmail.com> - 2016-09-03 07:46 -0700
Re: Standard or Forth? "Elizabeth D. Rather" <erather@forth.com> - 2016-09-03 23:53 +0200
Re: Standard or Forth? stephen@mpeforth.com (Stephen Pelc) - 2016-09-03 22:37 +0000
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-03 21:17 -0700
Re: Standard or Forth? "HAA" <someone@microsoft.com> - 2016-09-05 02:35 +1000
Re: Standard or Forth? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-09-05 03:18 +0200
Re: Standard or Forth? "HAA" <someone@microsoft.com> - 2016-09-08 22:04 +1000
Re: Standard or Forth? Paul Rubin <no.email@nospam.invalid> - 2016-09-08 12:41 -0700
Re: Standard or Forth? "HAA" <someone@microsoft.com> - 2016-09-09 12:51 +1000
Re: Standard or Forth? Paul Rubin <no.email@nospam.invalid> - 2016-09-08 21:50 -0700
Re: Standard or Forth? "HAA" <someone@microsoft.com> - 2016-09-12 17:16 +1000
Re: Standard or Forth? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-09-12 16:59 +0000
Re: Standard or Forth? "HAA" <someone@microsoft.com> - 2016-09-15 13:38 +1000
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-08 23:33 -0700
Re: Standard or Forth? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-09-05 08:41 +0100
Re: Standard or Forth? hughaguilar96@gmail.com - 2016-09-05 01:42 -0700
Re: Rosetta Code: Catamorphism albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-08-29 16:03 +0200
Re: Rosetta Code: Catamorphism anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-29 16:04 +0000
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