Re: encapsulating directory operations

Liste des GroupesRevenir à cl c 
Sujet : Re: encapsulating directory operations
De : mutazilah (at) *nospam* gmail.com (Paul Edwards)
Groupes : comp.lang.c
Date : 21. May 2025, 01:31:15
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <100j6sn$2g2cg$1@dont-email.me>
References : 1 2 3 4 5 6 7
User-Agent : Microsoft Outlook Express 6.00.2800.1106
"Kaz Kylheku" <643-408-1753@kylheku.com> wrote in message
news:20250520163755.523@kylheku.com...
On 2025-05-20, Paul Edwards <mutazilah@gmail.com> wrote:
"Paul Edwards" <mutazilah@gmail.com> wrote in message
news:100j09o$2f04b$1@dont-email.me...
>
Manipulating directories is not as important as manipulating
files. The C90 people didn't leave out file manipulation (I
think the ISO Pascal people left it out, at least originally).
>
Actually, I think it was program paramaters that weren't
specified.
>
But again - maybe it is C90 that was wrong to specify argc
and argv and the Pascal people got it right.
>
That depends on the philosophy of language standards.
>
And I am not personally familiar with the philosophy of
language standards.
>
ANSI C was codifying a lot of existing practices.
>
C programs starting with a main() function which takes argc and argv was
in this category.  It came from Unix, and C implementations on other
platforms imitated that.
>
C appeared as the systems programming language of Unix.
C on Unix had a way to process directories via library
functions.
>
Implementors of C on other systems choose to implement some functions
from Unix, and not others. They didn't implement the directory-related
ones, rendering them nonportable, and unsuitable for standardizing
into the language.

There was a reason they weren't implemented.

Probably the same reason they weren't in K&R C either.

Ritchie had the floor to himself. HE chose not to implement it.
Because directories don't really exist everywhere.

But - they sort of do. The concept is - or can be - there.

From my understanding, C and Unix standardization were separate but
somewhat coordinated efforts. Unix things that didn't get into C were
standardized by the emerging Unix standard.
>
Today, if I want a program tha tneeds to walk directories, I use the
POSIX C library. It is widely implemented. The program won't run
absolutely everywhere, but it will run on many embedded systems,
as well as supercomputers, and everything in between.

You have stated the problem. I want to run on some
definition of "absolutely everywhere" that is different
from "many systems".

That's why I'm still on C90, for that "absolutely everywhere",
and now proposing a slight change so that "absolutely
everywhere" is still technically possible. Even on standard MVS.

BFN. Paul.



Date Sujet#  Auteur
20 May 25 * encapsulating directory operations308Paul Edwards
20 May 25 +* Re: encapsulating directory operations83Lawrence D'Oliveiro
20 May 25 i+* Re: encapsulating directory operations20Paul Edwards
21 May 25 ii`* Re: encapsulating directory operations19Lawrence D'Oliveiro
21 May 25 ii `* Re: encapsulating directory operations18Paul Edwards
21 May 25 ii  `* Re: encapsulating directory operations17Lawrence D'Oliveiro
21 May 25 ii   +* Re: encapsulating directory operations3Paul Edwards
22 May 25 ii   i`* Re: encapsulating directory operations2Lawrence D'Oliveiro
22 May 25 ii   i `- Re: encapsulating directory operations1Kaz Kylheku
22 May 25 ii   `* Re: encapsulating directory operations13James Kuyper
22 May 25 ii    `* Re: encapsulating directory operations12Lawrence D'Oliveiro
22 May 25 ii     `* Re: encapsulating directory operations11James Kuyper
22 May 25 ii      `* Re: encapsulating directory operations10Lawrence D'Oliveiro
23 May 25 ii       `* Re: encapsulating directory operations9James Kuyper
23 May 25 ii        `* Re: encapsulating directory operations8Kaz Kylheku
23 May 25 ii         +* Re: encapsulating directory operations3Paul Edwards
23 May 25 ii         i+- Re: encapsulating directory operations1Kaz Kylheku
24 May 25 ii         i`- Re: encapsulating directory operations1Lawrence D'Oliveiro
23 May 25 ii         `* Re: encapsulating directory operations4James Kuyper
23 May 25 ii          `* Re: encapsulating directory operations3Kaz Kylheku
24 May 25 ii           `* Re: encapsulating directory operations2James Kuyper
24 May 25 ii            `- Re: encapsulating directory operations1Kaz Kylheku
31 May 25 i`* Re: encapsulating directory operations62Bonita Montero
31 May 25 i `* Re: encapsulating directory operations61Lawrence D'Oliveiro
1 Jun 25 i  `* Re: encapsulating directory operations60Bonita Montero
1 Jun 25 i   `* Re: encapsulating directory operations59Lawrence D'Oliveiro
2 Jun 25 i    `* Re: encapsulating directory operations58Bonita Montero
3 Jun 25 i     +* Re: encapsulating directory operations2James Kuyper
3 Jun 25 i     i`- Re: encapsulating directory operations1Kaz Kylheku
3 Jun 25 i     +* Re: encapsulating directory operations9Lawrence D'Oliveiro
10 Jun 25 i     i`* Re: encapsulating directory operations8Bonita Montero
10 Jun 25 i     i +- Re: encapsulating directory operations1Bonita Montero
10 Jun 25 i     i +- Re: encapsulating directory operations1Kaz Kylheku
11 Jun 25 i     i `* Re: encapsulating directory operations5Lawrence D'Oliveiro
11 Jun 25 i     i  `* Re: encapsulating directory operations4Bonita Montero
11 Jun 25 i     i   +- Re: encapsulating directory operations1Lawrence D'Oliveiro
11 Jun 25 i     i   `* Re: encapsulating directory operations2Bonita Montero
12 Jun 25 i     i    `- Re: encapsulating directory operations1Lawrence D'Oliveiro
3 Jun 25 i     `* Re: encapsulating directory operations46Bonita Montero
6 Jun 25 i      `* Re: encapsulating directory operations45Bonita Montero
6 Jun 25 i       `* Re: encapsulating directory operations44Bonita Montero
6 Jun 25 i        `* Re: encapsulating directory operations43Bonita Montero
6 Jun 25 i         `* Re: encapsulating directory operations42wij
7 Jun 25 i          `* Re: encapsulating directory operations41Bonita Montero
7 Jun 25 i           `* Re: encapsulating directory operations40wij
7 Jun 25 i            `* Re: encapsulating directory operations39Bonita Montero
7 Jun 25 i             `* Re: encapsulating directory operations38wij
7 Jun 25 i              `* Re: encapsulating directory operations37Bonita Montero
7 Jun 25 i               +* Re: encapsulating directory operations22wij
7 Jun 25 i               i+- Re: encapsulating directory operations1Bonita Montero
8 Jun 25 i               i`* Re: encapsulating directory operations20Bonita Montero
8 Jun 25 i               i +* Re: encapsulating directory operations12Muttley
8 Jun 25 i               i i`* Re: encapsulating directory operations11Bonita Montero
8 Jun 25 i               i i `* Re: encapsulating directory operations10Muttley
8 Jun 25 i               i i  +* Re: encapsulating directory operations3Bonita Montero
9 Jun 25 i               i i  i`* Re: encapsulating directory operations2Muttley
9 Jun 25 i               i i  i `- Re: encapsulating directory operations1Bonita Montero
8 Jun 25 i               i i  +* Re: encapsulating directory operations2Kaz Kylheku
10 Jun 25 i               i i  i`- Re: encapsulating directory operations1Tim Rentsch
8 Jun 25 i               i i  +- Re: encapsulating directory operations1Bonita Montero
9 Jun 25 i               i i  +- Re: encapsulating directory operations1wij
9 Jun 25 i               i i  `* Re: encapsulating directory operations2Muttley
9 Jun 25 i               i i   `- Re: encapsulating directory operations1Bonita Montero
8 Jun 25 i               i +* Re: encapsulating directory operations5wij
8 Jun 25 i               i i`* Re: encapsulating directory operations4Bonita Montero
8 Jun 25 i               i i `* Re: encapsulating directory operations3wij
8 Jun 25 i               i i  `* Re: encapsulating directory operations2Bonita Montero
8 Jun 25 i               i i   `- Re: encapsulating directory operations1wij
9 Jun 25 i               i `* Re: encapsulating directory operations2Lawrence D'Oliveiro
9 Jun 25 i               i  `- Re: encapsulating directory operations1Bonita Montero
7 Jun 25 i               `* Re: encapsulating directory operations14Janis Papanagnou
8 Jun 25 i                `* Re: encapsulating directory operations13Bonita Montero
8 Jun 25 i                 +- Re: encapsulating directory operations1Chris M. Thomasson
8 Jun 25 i                 `* Re: encapsulating directory operations11Bonita Montero
9 Jun 25 i                  +* Re: encapsulating directory operations8Bonita Montero
9 Jun 25 i                  i+* Re: encapsulating directory operations6Bonita Montero
9 Jun 25 i                  ii+- Re: encapsulating directory operations1Bonita Montero
10 Jun 25 i                  ii+* Re: encapsulating directory operations3Muttley
10 Jun 25 i                  iii+- Re: encapsulating directory operations1Muttley
10 Jun 25 i                  iii`- Re: encapsulating directory operations1Chris M. Thomasson
10 Jun 25 i                  ii`- Re: encapsulating directory operations1Waldek Hebisch
9 Jun 25 i                  i`- Re: encapsulating directory operations1Richard Heathfield
10 Jun 25 i                  `* Re: encapsulating directory operations2Tim Rentsch
10 Jun 25 i                   `- Re: encapsulating directory operations1Bonita Montero
20 May 25 +* Re: encapsulating directory operations74Keith Thompson
20 May 25 i+* Re: encapsulating directory operations28Richard Heathfield
20 May 25 ii+- Re: encapsulating directory operations1Paul Edwards
20 May 25 ii+- Re: encapsulating directory operations1David Brown
20 May 25 ii+* Re: encapsulating directory operations7Kaz Kylheku
20 May 25 iii`* Re: encapsulating directory operations6Richard Heathfield
20 May 25 iii +* Re: encapsulating directory operations2Muttley
20 May 25 iii i`- Re: encapsulating directory operations1Paul Edwards
20 May 25 iii `* Re: encapsulating directory operations3Paul Edwards
20 May 25 iii  `* Re: encapsulating directory operations2Richard Heathfield
20 May 25 iii   `- Re: encapsulating directory operations1Paul Edwards
23 May 25 ii`* Re: encapsulating directory operations18Tim Rentsch
23 May 25 ii +* Re: encapsulating directory operations6Richard Heathfield
24 May 25 ii i`* Re: encapsulating directory operations5Tim Rentsch
24 May 25 ii i `* Re: encapsulating directory operations4Richard Heathfield
28 May 25 ii i  `* Re: encapsulating directory operations3Tim Rentsch
28 May 25 ii i   `* Re: encapsulating directory operations2Richard Heathfield
26 May 25 ii `* Re: encapsulating directory operations11Peter 'Shaggy' Haywood
20 May 25 i`* Re: encapsulating directory operations45Paul Edwards
20 May 25 +* Re: encapsulating directory operations145Kaz Kylheku
21 May 25 +* Re: encapsulating directory operations3Janis Papanagnou
22 May 25 +- Re: encapsulating directory operations1Bonita Montero
25 May 25 `- Re: encapsulating directory operations1Tim Rentsch

Haut de la page

Les messages affichés proviennent d'usenet.

NewsPortal