Re: Command Languages Versus Programming Languages

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Sujet : Re: Command Languages Versus Programming Languages
De : ram (at) *nospam* zedat.fu-berlin.de (Stefan Ram)
Groupes : comp.unix.shell comp.unix.programmer comp.lang.misc
Date : 30. Mar 2024, 08:47:14
Autres entêtes
Organisation : Stefan Ram
Message-ID : <scripting-20240330084331@ram.dialup.fu-berlin.de>
References : 1 2 3 4
Johanne Fairchild <jfairchild@tudado.org> wrote or quoted:
ram@zedat.fu-berlin.de (Stefan Ram) writes:
Johanne Fairchild <jfairchild@tudado.org> wrote or quoted:
A scripting language is a programming language made for a hypothetical
machine, not too different from a programming language made for a real
machine, one made of hardware.
C is clearly a programming language, yet its specification
says, "The semantic descriptions in this document describe
the behavior of an abstract machine". And you cannot buy
  this abstract C machine as a piece of hardware anywhere!
Of course. :) But we both know what that means.  It's abstract because
there are so many real machines for which this abstract one is an
abstraction of.  And the real ones are the target of the language.

  If you want to see it this way ...

  But look at Pascal, Java, or Python. They are usually compiled
  into an intermediate code (called "p-code" in the case of
  Pascal) which is then interpreted (the interpreter is called
  "JVM" in the case of Java). Yet, we think of Pascal and Java
  as programming languages and of Python as a scripting language.

  But this is actually an implementation detail: Java also can
  be compiled into machine code.

  In any case, we can write a small batch file "execute" which
  can be called for source code in any programming language and
  will execute it:

execute Main.pas
execute Main.java
execute Main.py
execute main.c
execute main.cpp
execute main.bas
execute main.bat
...

  They all will print "Hello World". Whether the execution happens
  via translation to machine code or via interpretation by another
  program or by a mixture of both is just an implementation
  detail of "execute", that usually will not matter much for the
  programmer. And often for the same language, one is free to
  either compile it to machine language or interpret it via another
  program.

  Some language, like LISP or Python, have "eval": These languages
  still can be compiled, but they require an interpreter at run-
  time. Java often is executed by interpretation first, but when
  the "Hotspot" interpreter sees that some code is executed often,
  it will then decide /at run-time/ to compile it into actual
  machine code! (And there are Python implementations that run
  on the JVM.)

  How can such implementation details matter for the question whether
  a language is called a programming language or a scripting language,
  when the programmer often does not even need to know about them?

  Yes, there also are C interpreters IIRC, but they are rare.

Date Sujet#  Auteur
29 Mar 24 * Command Languages Versus Programming Languages708Lawrence D'Oliveiro
29 Mar 24 +- Re: Command Languages Versus Programming Languages1candycanearter07
29 Mar 24 +* Re: Command Languages Versus Programming Languages19Janis Papanagnou
29 Mar 24 i+* Re: Command Languages Versus Programming Languages15Lawrence D'Oliveiro
30 Mar 24 ii`* Re: Command Languages Versus Programming Languages14Janis Papanagnou
30 Mar 24 ii +* Re: Command Languages Versus Programming Languages3Janis Papanagnou
30 Mar 24 ii i`* Re: Command Languages Versus Programming Languages2Keith Thompson
30 Mar 24 ii i `- Re: Command Languages Versus Programming Languages1Janis Papanagnou
30 Mar 24 ii +* Re: Command Languages Versus Programming Languages6Lawrence D'Oliveiro
30 Mar 24 ii i+* Re: Command Languages Versus Programming Languages3Keith Thompson
30 Mar 24 ii ii`* Re: Command Languages Versus Programming Languages2Lawrence D'Oliveiro
30 Mar 24 ii ii `- Re: Command Languages Versus Programming Languages1Keith Thompson
30 Mar 24 ii i`* Re: Command Languages Versus Programming Languages2Janis Papanagnou
30 Mar 24 ii i `- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
30 Mar 24 ii +* Re: Command Languages Versus Programming Languages3Keith Thompson
30 Mar 24 ii i`* Re: Command Languages Versus Programming Languages2Janis Papanagnou
30 Mar 24 ii i `- Re: Command Languages Versus Programming Languages1Keith Thompson
31 Mar 24 ii `- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
29 Mar 24 i`* Re: Command Languages Versus Programming Languages3Stefan Ram
30 Mar 24 i `* Re: Command Languages Versus Programming Languages2Janis Papanagnou
30 Mar 24 i  `- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
29 Mar 24 +* Re: Command Languages Versus Programming Languages168Muttley
29 Mar 24 i+- Re: Command Languages Versus Programming Languages1Josef Möllers
29 Mar 24 i+* Re: Command Languages Versus Programming Languages9Richard Kettlewell
29 Mar 24 ii`* Re: Command Languages Versus Programming Languages8Muttley
29 Mar 24 ii `* Re: Command Languages Versus Programming Languages7Kaz Kylheku
29 Mar 24 ii  `* Re: Command Languages Versus Programming Languages6Muttley
29 Mar 24 ii   `* Re: Command Languages Versus Programming Languages5Kaz Kylheku
30 Mar 24 ii    `* Re: Command Languages Versus Programming Languages4Muttley
30 Mar 24 ii     +- Re: Command Languages Versus Programming Languages1Janis Papanagnou
30 Mar 24 ii     `* Re: Command Languages Versus Programming Languages2Kaz Kylheku
1 Apr 24 ii      `- Re: Command Languages Versus Programming Languages1Muttley
29 Mar 24 i`* Re: Command Languages Versus Programming Languages157John Ames
29 Mar 24 i +* Re: Command Languages Versus Programming Languages155Muttley
29 Mar 24 i i+- Re: Command Languages Versus Programming Languages1John Ames
29 Mar 24 i i+* Re: Command Languages Versus Programming Languages149Kaz Kylheku
29 Mar 24 i ii`* Re: Command Languages Versus Programming Languages148Muttley
29 Mar 24 i ii +* Re: Command Languages Versus Programming Languages146Kaz Kylheku
29 Mar 24 i ii i+* Re: Command Languages Versus Programming Languages4David W. Hodgins
29 Mar 24 i ii ii+* Re: Command Languages Versus Programming Languages2Johanne Fairchild
30 Mar 24 i ii iii`- Re: Command Languages Versus Programming Languages1David W. Hodgins
30 Mar 24 i ii ii`- Re: Command Languages Versus Programming Languages1Janis Papanagnou
30 Mar 24 i ii i`* Re: Command Languages Versus Programming Languages141Muttley
30 Mar 24 i ii i `* Re: Command Languages Versus Programming Languages140Kaz Kylheku
1 Apr 24 i ii i  `* Re: Command Languages Versus Programming Languages139Muttley
1 Apr 24 i ii i   +* Re: Command Languages Versus Programming Languages137Johanne Fairchild
1 Apr 24 i ii i   i`* Re: Command Languages Versus Programming Languages136Muttley
1 Apr 24 i ii i   i +- Re: Command Languages Versus Programming Languages1Kaz Kylheku
2 Apr 24 i ii i   i `* Re: Command Languages Versus Programming Languages134Johanne Fairchild
2 Apr 24 i ii i   i  +* Re: Command Languages Versus Programming Languages113ram@zedat.fu-berlin.de (Stefan Ram)
2 Apr 24 i ii i   i  i+* Re: Command Languages Versus Programming Languages111Stefan Ram
2 Apr 24 i ii i   i  ii+* Re: Command Languages Versus Programming Languages109Stefan Ram
3 Apr 24 i ii i   i  iii`* Re: Command Languages Versus Programming Languages108Lawrence D'Oliveiro
3 Apr 24 i ii i   i  iii `* Re: Command Languages Versus Programming Languages107David Brown
3 Apr 24 i ii i   i  iii  +- Re: Command Languages Versus Programming Languages1Lawrence D'Oliveiro
3 Apr 24 i ii i   i  iii  +- Re: Command Languages Versus Programming Languages1John Ames
3 Apr 24 i ii i   i  iii  `* Re: Command Languages Versus Programming Languages104Keith Thompson
3 Apr 24 i ii i   i  iii   +* Re: Command Languages Versus Programming Languages99Richard Kettlewell
4 Apr 24 i ii i   i  iii   i+- Re: Command Languages Versus Programming Languages1Muttley
4 Apr 24 i ii i   i  iii   i`* Re: Command Languages Versus Programming Languages97Stefan Ram
5 Apr 24 i ii i   i  iii   i `* Re: Command Languages Versus Programming Languages96Lawrence D'Oliveiro
5 Apr 24 i ii i   i  iii   i  +* Re: Command Languages Versus Programming Languages49Muttley
5 Apr 24 i ii i   i  iii   i  i+* Re: Command Languages Versus Programming Languages3candycanearter07
5 Apr 24 i ii i   i  iii   i  ii`* Re: Command Languages Versus Programming Languages2Muttley
6 Apr 24 i ii i   i  iii   i  ii `- Re: Command Languages Versus Programming Languages1candycanearter07
6 Apr 24 i ii i   i  iii   i  i`* Re: Command Languages Versus Programming Languages45Lawrence D'Oliveiro
6 Apr 24 i ii i   i  iii   i  i `* Re: Command Languages Versus Programming Languages44Alan Bawden
6 Apr 24 i ii i   i  iii   i  i  +* Re: Command Languages Versus Programming Languages13Lawrence D'Oliveiro
8 Apr 24 i ii i   i  iii   i  i  i`* Re: Command Languages Versus Programming Languages12John Ames
9 Apr 24 i ii i   i  iii   i  i  i `* Re: Command Languages Versus Programming Languages11Lawrence D'Oliveiro
9 Apr 24 i ii i   i  iii   i  i  i  +* Re: Command Languages Versus Programming Languages9John Ames
9 Apr 24 i ii i   i  iii   i  i  i  i`* Re: Command Languages Versus Programming Languages8Richard Kettlewell
9 Apr 24 i ii i   i  iii   i  i  i  i +* Re: Command Languages Versus Programming Languages2Janis Papanagnou
9 Apr 24 i ii i   i  iii   i  i  i  i i`- Re: Command Languages Versus Programming Languages1Richard Kettlewell
9 Apr 24 i ii i   i  iii   i  i  i  i `* Re: Command Languages Versus Programming Languages5David Brown
9 Apr 24 i ii i   i  iii   i  i  i  i  `* Re: Command Languages Versus Programming Languages4Lawrence D'Oliveiro
9 Apr 24 i ii i   i  iii   i  i  i  i   `* Re: Command Languages Versus Programming Languages3David Brown
10 Apr 24 i ii i   i  iii   i  i  i  i    `* Re: Command Languages Versus Programming Languages2Lawrence D'Oliveiro
10 Apr 24 i ii i   i  iii   i  i  i  i     `- Re: Command Languages Versus Programming Languages1Kaz Kylheku
9 Apr 24 i ii i   i  iii   i  i  i  `- Re: Command Languages Versus Programming Languages1Kaz Kylheku
6 Apr 24 i ii i   i  iii   i  i  +* Re: Command Languages Versus Programming Languages3Kaz Kylheku
6 Apr 24 i ii i   i  iii   i  i  i`* Re: Command Languages Versus Programming Languages2David Brown
6 Apr 24 i ii i   i  iii   i  i  i `- Re: Command Languages Versus Programming Languages1Muttley
6 Apr 24 i ii i   i  iii   i  i  +- Re: Command Languages Versus Programming Languages1candycanearter07
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8 Apr 24 i ii i   i  iii   i  i   i `* Re: Command Languages Versus Programming Languages20David Brown
8 Apr 24 i ii i   i  iii   i  i   i  `* Re: Command Languages Versus Programming Languages19Muttley
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