Re: Command Languages Versus Programming Languages

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Sujet : Re: Command Languages Versus Programming Languages
De : rweikusat (at) *nospam* talktalk.net (Rainer Weikusat)
Groupes : comp.unix.shell comp.unix.programmer comp.lang.misc
Date : 21. Nov 2024, 18:01:48
Autres entêtes
Message-ID : <87v7wgr05f.fsf@doppelsaurus.mobileactivedefense.com>
References : 1 2 3 4 5 6 7 8 9 10 11 12 13
User-Agent : Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)
merlyn@stonehenge.com (Randal L. Schwartz) writes:
"Rainer" == Rainer Weikusat <rweikusat@talktalk.net> writes:
Rainer> ¹ I used to use a JSON parser written in OO-Perl which made
Rainer> extensive use of regexes for that. I've recently replaced that
Rainer> with a C/XS version which - while slightly larger (617 vs 410
Rainer> lines of text) - is over a hundred times faster and conceptually
Rainer> simpler at the same time.
>
I wonder if that was my famous "JSON parser in a single regex" from
https://www.perlmonks.org/?node_id=995856, or from one of the two CPAN
modules that incorporated it.

No. One of my use-cases is an interactive shell running in a web browser
using ActionCable messages to relay data between the browser and the
shell process on the computer supposed to be accessed in this way. For
this, I absolutely do need \u escapes. I also need this to be fast. Eg,
one of the nice properties of JSON is that the type of a value can be
determined by looking at the first character of it. This cries for an
implementation based on an array of pointers to 'value parsing routines'
of size 256 and determining the parser routine to use by using the first
character as index into this table (which will either yield a pointer to
the correct parser routine or NULL for a syntax error).

Date Sujet#  Auteur
30 Sep 24 * Re: Command Languages Versus Programming Languages169Bozo User
30 Sep 24 +* Re: Command Languages Versus Programming Languages5Lawrence D'Oliveiro
1 Oct 24 i`* Re: Command Languages Versus Programming Languages4usuario
2 Oct 24 i `* Re: Command Languages Versus Programming Languages3Muttley
2 Oct 24 i  `* Re: Command Languages Versus Programming Languages2usuario
2 Oct 24 i   `- Re: Command Languages Versus Programming Languages1Muttley
9 Oct 24 `* Re: Command Languages Versus Programming Languages163Rainer Weikusat
10 Oct 24  `* Re: Command Languages Versus Programming Languages162Muttley
10 Oct 24   +* Re: Command Languages Versus Programming Languages80Rainer Weikusat
10 Oct 24   i+* Re: Command Languages Versus Programming Languages69Muttley
10 Oct 24   ii+* Re: Command Languages Versus Programming Languages67Rainer Weikusat
10 Oct 24   iii+* Re: Command Languages Versus Programming Languages62Kaz Kylheku
10 Oct 24   iiii`* Re: Command Languages Versus Programming Languages61Rainer Weikusat
11 Oct 24   iiii `* Re: Command Languages Versus Programming Languages60Bart
11 Oct 24   iiii  `* Re: Command Languages Versus Programming Languages59Rainer Weikusat
11 Oct 24   iiii   `* Re: Command Languages Versus Programming Languages58Muttley
11 Oct 24   iiii    +* Re: Command Languages Versus Programming Languages45Dan Cross
11 Oct 24   iiii    i`* Re: Command Languages Versus Programming Languages44Muttley
11 Oct 24   iiii    i +* Re: Command Languages Versus Programming Languages40Dan Cross
12 Oct 24   iiii    i i`* Re: Command Languages Versus Programming Languages39Muttley
12 Oct 24   iiii    i i `* Re: Command Languages Versus Programming Languages38Dan Cross
12 Oct 24   iiii    i i  `* Re: Command Languages Versus Programming Languages37Muttley
12 Oct 24   iiii    i i   +- Re: Command Languages Versus Programming Languages1Muttley
12 Oct 24   iiii    i i   `* Re: Command Languages Versus Programming Languages35Dan Cross
13 Oct 24   iiii    i i    `* Re: Command Languages Versus Programming Languages34Muttley
13 Oct 24   iiii    i i     `* Re: Command Languages Versus Programming Languages33Dan Cross
13 Oct 24   iiii    i i      +* Re: Command Languages Versus Programming Languages27Muttley
13 Oct 24   iiii    i i      i+- Re: Command Languages Versus Programming Languages1Janis Papanagnou
13 Oct 24   iiii    i i      i+* Re: Command Languages Versus Programming Languages24Dan Cross
13 Oct 24   iiii    i i      ii`* Re: Command Languages Versus Programming Languages23Muttley
13 Oct 24   iiii    i i      ii +* Re: Command Languages Versus Programming Languages12Janis Papanagnou
13 Oct 24   iiii    i i      ii i+* Re: Command Languages Versus Programming Languages4Lawrence D'Oliveiro
14 Oct 24   iiii    i i      ii ii`* Re: Command Languages Versus Programming Languages3Janis Papanagnou
14 Oct 24   iiii    i i      ii ii `* Re: Command Languages Versus Programming Languages2Lawrence D'Oliveiro
14 Oct 24   iiii    i i      ii ii  `- Re: Command Languages Versus Programming Languages1Janis Papanagnou
14 Oct 24   iiii    i i      ii i`* Re: Command Languages Versus Programming Languages7Muttley
14 Oct 24   iiii    i i      ii i +- Re: Command Languages Versus Programming Languages1Janis Papanagnou
14 Oct 24   iiii    i i      ii i +- Re: Command Languages Versus Programming Languages1Muttley
14 Oct 24   iiii    i i      ii i +* Re: Command Languages Versus Programming Languages3Bart
15 Oct 24   iiii    i i      ii i i+- Re: Command Languages Versus Programming Languages1David Brown
15 Oct 24   iiii    i i      ii i i`- Re: Command Languages Versus Programming Languages1Dan Cross
14 Oct 24   iiii    i i      ii i `- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
13 Oct 24   iiii    i i      ii +* Re: Command Languages Versus Programming Languages9Dan Cross
14 Oct 24   iiii    i i      ii i`* Re: Command Languages Versus Programming Languages8Muttley
14 Oct 24   iiii    i i      ii i `* Re: Command Languages Versus Programming Languages7Dan Cross
14 Oct 24   iiii    i i      ii i  +* Re: Command Languages Versus Programming Languages5Muttley
14 Oct 24   iiii    i i      ii i  i+* Re: Command Languages Versus Programming Languages2David Brown
14 Oct 24   iiii    i i      ii i  ii`- Re: Command Languages Versus Programming Languages1Janis Papanagnou
14 Oct 24   iiii    i i      ii i  i+- Re: Command Languages Versus Programming Languages1Janis Papanagnou
14 Oct 24   iiii    i i      ii i  i`- Re: Command Languages Versus Programming Languages1Dan Cross
14 Oct 24   iiii    i i      ii i  `- Re: Command Languages Versus Programming Languages1Stefan Ram
13 Oct 24   iiii    i i      ii `- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
13 Oct 24   iiii    i i      i`- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
13 Oct 24   iiii    i i      `* Re: Command Languages Versus Programming Languages5Dan Cross
13 Oct 24   iiii    i i       `* Re: Command Languages Versus Programming Languages4Bart
13 Oct 24   iiii    i i        `* Re: Command Languages Versus Programming Languages3Dan Cross
14 Oct 24   iiii    i i         `* Re: Command Languages Versus Programming Languages2Bart
14 Oct 24   iiii    i i          `- Re: On overly rigid definitions (was Re: Command Languages Versus Programming Languages)1Dan Cross
13 Oct 24   iiii    i `* Re: Command Languages Versus Programming Languages3Kaz Kylheku
13 Oct 24   iiii    i  +- Re: Command Languages Versus Programming Languages1Bart
13 Oct 24   iiii    i  `- Re: Command Languages Versus Programming Languages1Dan Cross
11 Oct 24   iiii    +* Re: Command Languages Versus Programming Languages2Rainer Weikusat
12 Oct 24   iiii    i`- Re: Command Languages Versus Programming Languages1Muttley
11 Oct 24   iiii    `* Re: Command Languages Versus Programming Languages10Lawrence D'Oliveiro
12 Oct 24   iiii     `* Re: Command Languages Versus Programming Languages9Muttley
12 Oct 24   iiii      +* Re: Command Languages Versus Programming Languages5Rainer Weikusat
12 Oct 24   iiii      i+* Re: Command Languages Versus Programming Languages3Christian Weisgerber
13 Oct 24   iiii      ii+- Re: Command Languages Versus Programming Languages1Muttley
13 Oct 24   iiii      ii`- Re: Command Languages Versus Programming Languages1Rainer Weikusat
12 Oct 24   iiii      i`- Re: Command Languages Versus Programming Languages1Bart
12 Oct 24   iiii      `* Re: Command Languages Versus Programming Languages3Lawrence D'Oliveiro
13 Oct 24   iiii       `* Re: Command Languages Versus Programming Languages2Muttley
13 Oct 24   iiii        `- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
11 Oct 24   iii+* Re: Command Languages Versus Programming Languages2Bart
11 Oct 24   iiii`- Re: Command Languages Versus Programming Languages1Rainer Weikusat
11 Oct 24   iii`* Re: Command Languages Versus Programming Languages2Muttley
11 Oct 24   iii `- Re: Command Languages Versus Programming Languages1Rainer Weikusat
11 Oct 24   ii`- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
12 Oct 24   i`* Re: Command Languages Versus Programming Languages10Eric Pozharski
13 Oct 24   i `* Re: Command Languages Versus Programming Languages9Muttley
13 Oct 24   i  +- Re: Command Languages Versus Programming Languages1Janis Papanagnou
13 Oct 24   i  +* Re: Command Languages Versus Programming Languages6Rainer Weikusat
14 Oct 24   i  i`* Re: Command Languages Versus Programming Languages5Muttley
14 Oct 24   i  i `* Re: Command Languages Versus Programming Languages4Rainer Weikusat
14 Oct 24   i  i  `* Re: Command Languages Versus Programming Languages3Muttley
14 Oct 24   i  i   `* Re: Command Languages Versus Programming Languages2Rainer Weikusat
14 Oct 24   i  i    `- Re: Command Languages Versus Programming Languages1Muttley
13 Oct 24   i  `- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
11 Nov 24   `* Re: Command Languages Versus Programming Languages81Sebastian
11 Nov 24    +* Re: Command Languages Versus Programming Languages14Muttley
11 Nov 24    i+* Re: Command Languages Versus Programming Languages2Wolfgang Agnes
11 Nov 24    ii`- Re: Command Languages Versus Programming Languages1Muttley
11 Nov 24    i+- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
12 Nov 24    i`* Re: Command Languages Versus Programming Languages10Janis Papanagnou
12 Nov 24    i `* Re: Command Languages Versus Programming Languages9Muttley
12 Nov 24    i  +* Re: Command Languages Versus Programming Languages7Janis Papanagnou
12 Nov 24    i  i`* Re: Command Languages Versus Programming Languages6Muttley
12 Nov 24    i  i `* Re: Command Languages Versus Programming Languages5Janis Papanagnou
12 Nov 24    i  i  +* Re: Command Languages Versus Programming Languages3Bart
12 Nov 24    i  i  i`* Re: Command Languages Versus Programming Languages2Lawrence D'Oliveiro
12 Nov 24    i  i  i `- Re: Command Languages Versus Programming Languages1Bart
12 Nov 24    i  i  `- Re: Command Languages Versus Programming Languages1Muttley
12 Nov 24    i  `- Re: Command Languages Versus Programming Languages1Wolfgang Agnes
11 Nov 24    `* Re: Command Languages Versus Programming Languages66Lawrence D'Oliveiro

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