if X = 0 then Exit;
at the beginning of the procedure, one writes
if X <> 0 then
begin
When you use it at the begining it may be arguably ok. But when it is used
in the
middle of procedure code it may be hard to notice.
On Thu, 17 Apr 2008 13:07:45 -0300, ik <[EMAIL PROTECTED]> wrote:
On Thu, Apr 17, 2008 at 6:53 PM, mm <[EMAIL PROTECTED]> wrote:
Rodrigo Palhano a écrit :
> On Tue, 15 Apr 2008 19:39:37 -0300, Zaher Dirkey <[EMAIL PROTECTED]>
wrote:
>
>
> > I use GO TO when teaching pascal, but after all i ask them to not
use
it, it
> > just a bridge to learning the logic of programming language.
> >
> > There is another word i hate to use it it is EXIT.
> >
>
> I also understand EXIT as a bad programming practice, it makes life
harder
for code readers.
>
I don't ;-) Even Ada has an "Exit" instruction which one is better than
the Pascal one because, with Ada, "Exit" is a keyword.
Using "Exit" is not of a bad programming practice. Suppose one has to
write a big procedure, say 150 lines of code. Suppose now that, instead
of writing
150 lines of code in procedure, should be move into smaller parts of
code imho.
But I believe in the motto of "die fast". As soon as you know that
your code should not handle something, go away, don't continue your
code, so exit have it uses. I think that every part of programming
tools, have their use, the problem is the abusing of such tool, and
using them even where there is no real use for it.
if X = 0 then Exit;
at the beginning of the procedure, one writes
if X <> 0 then
begin
...
Does a reader immediately see that, when X = 0, the procedure does
nothing? No. They have to read all the code, to search for the "end"
that closes the "begin" in order to get sure there are no instructions
after this "end". In such a case, with the "Exit" instruction the
procedure is much easier to read.
mm
----
http://www.ellipsa.net/
_______________________________________________
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/mailman/listinfo/fpc-pascal
--
Rodrigo Palhano
---------------------------------
Equipe SpeedCASE
http://www.speedcase.com.br
_______________________________________________
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/mailman/listinfo/fpc-pascal
