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* How to exit out of a function ? what is try-catch-throw in terms of Program Counter
@ 2007-10-20 20:45 gnuist006
  2007-10-20 20:57 ` gnuist006
                   ` (7 more replies)
  0 siblings, 8 replies; 33+ messages in thread
From: gnuist006 @ 2007-10-20 20:45 UTC (permalink / raw)
  To: help-gnu-emacs

I have some code like this:

(if  (test)
    (exit)
    (do something))


or

(if (test)
   ( do something)
   (exit))


Various levels of nestings.

I have several questions, basic to sophisticated.

(1) What is the lisp equivalent idiom for (exit) as in bash or
in C.
(2) What is the best practice to handle this kind of problems?

(3) What is the intermediate practice to handle this kind of
problems.

NOTE: I am really afraid of try-catch-throw. I have never been
able to understand it since it does not exist in C and I cant
really visualize the construct in terms of C. That is what my
brain can process. If you understand it so well, you can show
me how one would really implement that kind of construct in
C and then by extension I can see that kind of program flow
in LISP. Whether its imperative programming or functional,
beneath there is program counter and assembly. C is close
to machine so much that it is almost assembly. So understanding try-c-
t in C is equivalent to understanding at
the level of machine language.

I therefore take the liberty to crosspost in C and C++ groups.

^ permalink raw reply	[flat|nested] 33+ messages in thread

end of thread, other threads:[~2007-12-02 23:51 UTC | newest]

Thread overview: 33+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-10-20 20:45 How to exit out of a function ? what is try-catch-throw in terms of Program Counter gnuist006
2007-10-20 20:57 ` gnuist006
2007-10-20 22:55 ` Alf P. Steinbach
2007-10-23 18:06   ` gnuist006
2007-10-23 19:53     ` Alf P. Steinbach
2007-11-04 23:02   ` David Thompson
2007-11-05  5:07     ` Alf P. Steinbach
2007-11-05  5:59       ` Alf P. Steinbach
2007-12-02 23:20       ` David Thompson
2007-12-02 23:51         ` Alf P. Steinbach
2007-10-21  1:08 ` Jim Langston
2007-10-21  2:30 ` Keith Thompson
2007-10-21 10:44   ` Kenny McCormack
2007-10-21 10:55     ` santosh
2007-10-21 12:26       ` Richard Heathfield
2007-10-21 22:35       ` Mark McIntyre
2007-10-21 12:09     ` Malcolm McLean
2007-10-21 15:23       ` Kenny McCormack
2007-10-21 15:54         ` santosh
2007-10-21 17:39         ` Malcolm McLean
2007-10-21 21:53           ` Kenny McCormack
2007-10-21  8:03 ` Malcolm McLean
2007-10-21 16:07 ` abhy
2007-10-21 17:43   ` santosh
2007-10-23  9:04 ` Joel Yliluoma
2007-10-23 16:33 ` Stefan Monnier
2007-10-23 16:44   ` gnuist006
2007-10-23 16:45   ` Victor Bazarov
2007-10-24  1:06     ` Stefan Monnier
2007-10-23 16:54   ` gnuist006
2007-10-23 17:14     ` Alf P. Steinbach
2007-10-24  1:09     ` Stefan Monnier
2007-10-24  0:02   ` Joel Yliluoma

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