Re: OT: Linix goes politics

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Sujet : Re: OT: Linix goes politics
De : joegwinn (at) *nospam* comcast.net (Joe Gwinn)
Groupes : sci.electronics.design
Date : 27. Oct 2024, 22:52:46
Autres entêtes
Message-ID : <dtcthjta199gkv0rvff4tbaip2qgaj0k2q@4ax.com>
References : 1 2 3 4 5 6
User-Agent : ForteAgent/8.00.32.1272
On Sat, 26 Oct 2024 14:45:07 -0700, Don Y
<blockedofcourse@foo.invalid> wrote:

On 10/26/2024 2:19 PM, Joe Gwinn wrote:
It's 9000 languages.  This was discussed on SED in February 2023.  My
posting on the subject is "Re: dead programming languages" posted on
23 February 2023.  This is the posting that went into ecosystems and
other practicalities.
>
Most languages just change the syntax of operations.
>
OTOH, many introduce (or, promote to first-class notions)
techniques and mechanisms that are tedious to implement
in other languages.

In evolution, all's fair, even if it isn't squishy critters that are
evolving.


E.g., support for concurrency has to be added to most
languages; there are no notions of having other processes
running alongside "yours"; thus, no mechanisms for exchanging
information with them, no mechanisms to ensure competing
accesses to data are atomic, etc.

Concurrency is far older than any computer language save assembly.

Hardware did concurrency before that.

In the old days, we did multiprocessing, with multiple processors
sharing a backplane with multiple processors. 

In advanced cases, there would also be a memory board on one of the
backplane slots, where data used by all could be retained - the
blackboard model was common.

Later, threads were invented, this being concurrent threads of control
within the same process and thus address space.  Etc.

And realtime operating systems were basically clouds of independent
but interacting finite state machines.  As was the hardware being
controlled.  The mapping between hardware and software FSMs needed to
be clean, or things got pretty awkward.

In none of these cases were the computer languages expected to have
any critical role in handling and implementing concurrency.

Which is good because they were not very good at concurrency.

To summarize, the software folk had no idea how hardware actually
worked, and the hardware folk didn't speak software.


Imagine using C (or any other programming language) to
*interact* with a relational database... how many errors
would a user likely make by failing to address the issues
that SQL hides?

Databases are a swamp of their own, and are far too slow and
unreliable for embedded realtime.  It's very common to use
N-dimensional hash tables for storage and access of random data.  Hash
table lookup is a O[1] (constant-time ) operation that does not
degrade as data accumulates.

Joe Gwinn

Date Sujet#  Auteur
25 Oct 24 * OT: Linix goes politics25Jan Panteltje
25 Oct 24 `* Re: OT: Linix goes politics24john larkin
26 Oct 24  +* Re: OT: Linix goes politics5Bill Sloman
26 Oct 24  i`* Re: OT: Linix goes politics4Lasse Langwadt
26 Oct 24  i `* Re: OT: Linix goes politics3Don Y
29 Oct 24  i  `* Re: OT: Linix goes politics2Lasse Langwadt
29 Oct 24  i   `- Re: OT: Linix goes politics1Don Y
26 Oct 24  `* Re: OT: Linix goes politics18Jan Panteltje
26 Oct 24   `* Re: OT: Linix goes politics17john larkin
26 Oct 24    +* Re: OT: Linix goes politics4Joe Gwinn
26 Oct 24    i`* Re: OT: Linix goes politics3Don Y
27 Oct 24    i `* Re: OT: Linix goes politics2Joe Gwinn
28 Oct 24    i  `- Re: OT: Linix goes politics1Don Y
27 Oct 24    +* Re: OT: Linix goes politics11Waldek Hebisch
27 Oct 24    i+* Re: OT: Linix goes politics5Don Y
27 Oct 24    ii`* Re: OT: Linix goes politics4Waldek Hebisch
27 Oct 24    ii +- Re: OT: Linix goes politics1Don Y
27 Oct 24    ii `* Re: OT: Linix goes politics2john larkin
28 Oct 24    ii  `- Re: OT: Linix goes politics1Jan Panteltje
27 Oct 24    i+* Re: OT: Linix goes politics4Jan Panteltje
27 Oct 24    ii`* Re: OT: Linix goes politics3Cursitor Doom
28 Oct 24    ii `* Re: OT: Linix goes politics2Jan Panteltje
28 Oct 24    ii  `- Re: OT: Linix goes politics1wmartin
28 Oct 24    i`- Re: OT: Linix goes politics1John R Walliker
27 Oct 24    `- Re: OT: Linix goes politics1Jan Panteltje

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