I guess i DO understand now! Thats really cool, was wondering about that for quite a
while... I i did understand it right, i have a new scope inside the loop, but if i
roll through the array, or hash i alwas!! refer to the variable defined in the main
program, right?
Nice of you! Itīs been a real Help!
btw, what is the 3D thing in "$n =3D $_;" ? I saw it quite often, but never knew...
If you can describe it to me, you are my "king of the week" and i wonīt bother you
again...
Greets Johannes
p.s.: have a nice weekend!
On Sep 20, Theuerkorn Johannes said:
>wow, it=B4s been only the my %values declared outside the loop... But why
>has it to be declared inside, i thougt its "global" if I use it outside?
>Isn,t it?
The problem is with using a reference to %values.
Here's an example:
my ($n, @list);
for (1, 2, 3, 4) {
$n =3D $_;
push @list, \$n;
}
for (@list) {
print "$$_ "; # prints 4 4 4 4
}
The reasons each element of @list holds the SAME reference is because
they're ALL references to the SAME $n. If you move the declaration of $n
into the loop, Perl will allocate a new $n each time:
my @list;
for (1, 2, 3, 4) {
my $n =3D $_;
push @list, \$n;
}
for (@list) {
print "$$_ "; # prints 1 2 3 4
}
--=20
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
[ I'm looking for programming work. If you like my work, let me know. ]
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