Re: Loops (was Re: do { quit; } else { })

Liste des GroupesRevenir à cl c 
Sujet : Re: Loops (was Re: do { quit; } else { })
De : bc (at) *nospam* freeuk.com (bart)
Groupes : comp.lang.c
Date : 22. Apr 2025, 02:21:32
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vu6qus$3dfmn$1@dont-email.me>
References : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
User-Agent : Mozilla Thunderbird
On 21/04/2025 22:06, Waldek Hebisch wrote:
bart <bc@freeuk.com> wrote:

You have to analyse it first. The kind of loop this expresses is:
>
    p = startvalue()
>
    while (p) {
       <body>
       p = nextvalue()
    }
>
Notice how I chose to express it: it reflects how I would describe it in
English:
>
    * Set P to Start Value
    * While P isn't Null:
      * Execute the body
      * Set P to Next Value
>
So, how would /you/ describe it in English? (Or in any language if like,
as the ordering is more important.)
 I would describe original sqlite3.c loop as "iteration over elements
of hash table".  That assumes that Sqlite folks choose sensible
names.  This is higher level view than you apparently have.
You're guessing based on the identifiers chosen. But that lump of code has this shape:
   for(A; B; C)
which is equivalent to: A; while (B) { body; C}
However, you can see that A and C are assignments to the same variable, so you can reasonably refine to what I wrote above. But perhaps the English should have been 'While P is True' to avoid the assumption it is a pointer.
You can't go beyond that however /from the shape of the code/.
Remember, C-for is 'flexible'. That means it can literally be anything, but the general pattern of any such loop can be expressed with 'while'.

Date Sujet#  Auteur
4 Apr 25 * do { quit; } else { }625Thiago Adams
4 Apr 25 +* Re: do { quit; } else { }2bart
4 Apr 25 i`- Re: do { quit; } else { }1Thiago Adams
4 Apr 25 +* Re: do { quit; } else { }11Kaz Kylheku
4 Apr 25 i+* Re: do { quit; } else { }3Thiago Adams
4 Apr 25 ii`* Re: do { quit; } else { }2Kaz Kylheku
4 Apr 25 ii `- Re: do { quit; } else { }1Chris M. Thomasson
4 Apr 25 i+* Re: do { quit; } else { }4Kaz Kylheku
4 Apr 25 ii+* Re: do { quit; } else { }2Thiago Adams
4 Apr 25 iii`- Re: do { quit; } else { }1Thiago Adams
8 Apr 25 ii`- Re: do { quit; } else { }1candycanearter07
5 Apr 25 i`* Re: do { quit; } else { }3Janis Papanagnou
5 Apr 25 i +- Re: do { quit; } else { }1Janis Papanagnou
6 Apr 25 i `- Re: do { quit; } else { }1Michael S
4 Apr 25 +* Re: do { quit; } else { }608Tim Rentsch
4 Apr 25 i`* Re: do { quit; } else { }607Thiago Adams
6 Apr 25 i +* Re: do { quit; } else { }600Tim Rentsch
6 Apr 25 i i+* Re: do { quit; } else { }550Michael S
6 Apr 25 i ii`* Re: do { quit; } else { }549Tim Rentsch
6 Apr 25 i ii `* Re: do { quit; } else { }548Michael S
7 Apr 25 i ii  `* Re: do { quit; } else { }547Tim Rentsch
7 Apr 25 i ii   `* Re: do { quit; } else { }546Michael S
7 Apr 25 i ii    +* Re: do { quit; } else { }542bart
8 Apr 25 i ii    i`* Re: do { quit; } else { }541David Brown
8 Apr 25 i ii    i `* Re: do { quit; } else { }540bart
8 Apr 25 i ii    i  +* Re: do { quit; } else { }535David Brown
8 Apr 25 i ii    i  i`* Re: do { quit; } else { }534bart
8 Apr 25 i ii    i  i +* Re: do { quit; } else { }78Tim Rentsch
8 Apr 25 i ii    i  i i`* Re: do { quit; } else { }77bart
8 Apr 25 i ii    i  i i +* Re: do { quit; } else { }74Tim Rentsch
8 Apr 25 i ii    i  i i i`* Re: do { quit; } else { }73bart
9 Apr 25 i ii    i  i i i `* Re: do { quit; } else { }72Tim Rentsch
9 Apr 25 i ii    i  i i i  `* Re: do { quit; } else { }71bart
9 Apr 25 i ii    i  i i i   +- Re: do { quit; } else { }1Chris M. Thomasson
9 Apr 25 i ii    i  i i i   +- Re: do { quit; } else { }1Chris M. Thomasson
9 Apr 25 i ii    i  i i i   `* Re: do { quit; } else { }68Tim Rentsch
10 Apr 25 i ii    i  i i i    +* Re: do { quit; } else { }63bart
10 Apr 25 i ii    i  i i i    i+* Re: do { quit; } else { }61Kaz Kylheku
10 Apr 25 i ii    i  i i i    ii+* Re: do { quit; } else { }2Michael S
10 Apr 25 i ii    i  i i i    iii`- Re: do { quit; } else { }1Kaz Kylheku
10 Apr 25 i ii    i  i i i    ii`* Re: do { quit; } else { }58bart
10 Apr 25 i ii    i  i i i    ii +* Re: do { quit; } else { }43Keith Thompson
10 Apr 25 i ii    i  i i i    ii i+* Re: do { quit; } else { }39bart
10 Apr 25 i ii    i  i i i    ii ii+* Re: Endless complaints [was Re: do { quit; } else { }]16bart
10 Apr 25 i ii    i  i i i    ii iii+* Re: Endless complaints [was Re: do { quit; } else { }]14Janis Papanagnou
11 Apr 25 i ii    i  i i i    ii iiii`* Re: Endless complaints [was Re: do { quit; } else { }]13bart
11 Apr 25 i ii    i  i i i    ii iiii +- Re: Endless complaints [was Re: do { quit; } else { }]1Keith Thompson
11 Apr 25 i ii    i  i i i    ii iiii +- Re: Endless complaints [was Re: do { quit; } else { }]1Kaz Kylheku
11 Apr 25 i ii    i  i i i    ii iiii `* Re: Endless complaints [was Re: do { quit; } else { }]10David Brown
11 Apr 25 i ii    i  i i i    ii iiii  `* Re: Endless complaints [was Re: do { quit; } else { }]9bart
11 Apr 25 i ii    i  i i i    ii iiii   +* Re: Endless complaints [was Re: do { quit; } else { }]5Michael S
11 Apr 25 i ii    i  i i i    ii iiii   i`* Re: Endless complaints [was Re: do { quit; } else { }]4bart
11 Apr 25 i ii    i  i i i    ii iiii   i `* Re: Endless complaints [was Re: do { quit; } else { }]3Michael S
11 Apr 25 i ii    i  i i i    ii iiii   i  +- Re: Endless complaints [was Re: do { quit; } else { }]1Janis Papanagnou
11 Apr 25 i ii    i  i i i    ii iiii   i  `- Re: Endless complaints [was Re: do { quit; } else { }]1bart
11 Apr 25 i ii    i  i i i    ii iiii   +- Re: Endless complaints [was Re: do { quit; } else { }]1David Brown
11 Apr 25 i ii    i  i i i    ii iiii   +- Re: Endless complaints1Tim Rentsch
11 Apr 25 i ii    i  i i i    ii iiii   `- Re: Endless complaints [was Re: do { quit; } else { }]1Keith Thompson
10 Apr 25 i ii    i  i i i    ii iii`- Re: Endless complaints [was Re: do { quit; } else { }]1Keith Thompson
10 Apr 25 i ii    i  i i i    ii ii`* Re: do { quit; } else { }22Keith Thompson
11 Apr 25 i ii    i  i i i    ii ii `* Re: do { quit; } else { }21bart
11 Apr 25 i ii    i  i i i    ii ii  `* Re: do { quit; } else { }20Keith Thompson
11 Apr 25 i ii    i  i i i    ii ii   `* Re: do { quit; } else { }19Michael S
11 Apr 25 i ii    i  i i i    ii ii    +- Re: do { quit; } else { }1David Brown
11 Apr 25 i ii    i  i i i    ii ii    +* Re: do { quit; } else { }16Kaz Kylheku
11 Apr 25 i ii    i  i i i    ii ii    i+* Re: do { quit; } else { }2bart
11 Apr 25 i ii    i  i i i    ii ii    ii`- Re: do { quit; } else { }1Keith Thompson
13 Apr 25 i ii    i  i i i    ii ii    i`* Re: do { quit; } else { }13Michael S
12 May 25 i ii    i  i i i    ii ii    i `* Re: do { quit; } else { }12Tim Rentsch
12 May 25 i ii    i  i i i    ii ii    i  `* Re: do { quit; } else { }11David Brown
12 May 25 i ii    i  i i i    ii ii    i   `* Re: do { quit; } else { }10Keith Thompson
13 May 25 i ii    i  i i i    ii ii    i    `* Re: do { quit; } else { }9David Brown
14 May 25 i ii    i  i i i    ii ii    i     `* Re: do { quit; } else { }8James Kuyper
14 May 25 i ii    i  i i i    ii ii    i      +* Re: do { quit; } else { }6Keith Thompson
14 May 25 i ii    i  i i i    ii ii    i      i+* Re: do { quit; } else { }4James Kuyper
14 May 25 i ii    i  i i i    ii ii    i      ii`* Re: do { quit; } else { }3David Brown
14 May 25 i ii    i  i i i    ii ii    i      ii +- Re: do { quit; } else { }1Kaz Kylheku
15 May 25 i ii    i  i i i    ii ii    i      ii `- Re: do { quit; } else { }1James Kuyper
14 May 25 i ii    i  i i i    ii ii    i      i`- Re: do { quit; } else { }1David Brown
14 May 25 i ii    i  i i i    ii ii    i      `- Re: do { quit; } else { }1Tim Rentsch
11 Apr 25 i ii    i  i i i    ii ii    `- Re: do { quit; } else { }1Keith Thompson
6 May 25 i ii    i  i i i    ii i`* Re: do { quit; } else { }3Tim Rentsch
6 May 25 i ii    i  i i i    ii i `* Re: do { quit; } else { }2Keith Thompson
6 May 25 i ii    i  i i i    ii i  `- Re: do { quit; } else { }1Tim Rentsch
10 Apr 25 i ii    i  i i i    ii `* Re: do { quit; } else { }14Kaz Kylheku
10 Apr 25 i ii    i  i i i    ii  +* Re: do { quit; } else { }11bart
10 Apr 25 i ii    i  i i i    ii  i+* Re: do { quit; } else { }2Kaz Kylheku
11 Apr 25 i ii    i  i i i    ii  ii`- Re: do { quit; } else { }1bart
11 Apr 25 i ii    i  i i i    ii  i+* Re: do { quit; } else { }6Tim Rentsch
11 Apr 25 i ii    i  i i i    ii  ii`* Re: do { quit; } else { }5Keith Thompson
11 Apr 25 i ii    i  i i i    ii  ii `* Re: do { quit; } else { }4Tim Rentsch
11 Apr 25 i ii    i  i i i    ii  ii  `* Re: do { quit; } else { }3Keith Thompson
11 Apr 25 i ii    i  i i i    ii  ii   +- Re: do { quit; } else { }1bart
5 May 25 i ii    i  i i i    ii  ii   `- Re: do { quit; } else { }1Tim Rentsch
11 Apr 25 i ii    i  i i i    ii  i+- Re: do { quit; } else { }1Keith Thompson
11 Apr 25 i ii    i  i i i    ii  i`- Re: do { quit; } else { }1Keith Thompson
10 Apr 25 i ii    i  i i i    ii  +- Re: do { quit; } else { }1bart
10 Apr 25 i ii    i  i i i    ii  `- Re: do { quit; } else { }1Kaz Kylheku
11 Apr 25 i ii    i  i i i    i`- Re: do { quit; } else { }1Tim Rentsch
9 May 25 i ii    i  i i i    `* Re: do { quit; } else { }4Bonita Montero
9 May 25 i ii    i  i i i     `* Re: do { quit; } else { }3Richard Heathfield
9 Apr 25 i ii    i  i i +- Re: do { quit; } else { }1Richard Damon
9 Apr 25 i ii    i  i i `- Re: do { quit; } else { }1David Brown
9 Apr 25 i ii    i  i `* Re: do { quit; } else { }455David Brown
8 Apr 25 i ii    i  +- Re: do { quit; } else { }1Tim Rentsch
9 Apr 25 i ii    i  `* Re: do { quit; } else { }3Ike Naar
8 Apr 25 i ii    `* Re: do { quit; } else { }3Tim Rentsch
6 Apr 25 i i`* Re: do { quit; } else { }49Michael S
7 May 25 i `* Re: do { quit; } else { }6Wuns Haerst
6 Apr 25 +- Re: do { quit; } else { }1Lawrence D'Oliveiro
6 Apr 25 +- Re: do { quit; } else { }1David Brown
18 Apr 25 `- Re: do { quit; } else { }1Mikko

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