perldoc perlsyn:
Foreach Loops
The "foreach" loop iterates over a normal list value and sets the
variable VAR to be each element of the list in turn. If the variable is
preceded with the
keyword "my", then it is lexically scoped, and is therefore
visible only within the loop. Otherwise, the variable is implicitly
local to the loop and regains its
former value upon exiting the loop. If the variable was
previously declared with "my", it uses that variable instead of the
global one, but it’s still localized
to the loop. This implicit localisation occurs only in a
"foreach" loop.
- Richie
Berler Chanan wrote:
> If I correct the script like this:
> I get this result: I get lv_num = 0 ????? why not 3
> Weird to me....thought it will update the number correctly
> Chanan
>
> my @arr = (1,2,3,4,5);
> my $lv_num = 0;
> foreach $lv_num (@arr)
> {
> print "Found $lv_num\n";
> last if ($lv_num == 3);
> }
>
> print "lv_num = $lv_num\n";
>
>
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf
> Of Berler Chanan
> Sent: Wednesday, June 10, 2009 11:48 AM
> To: 'Perl in Israel'
> Subject: [Israel.pm] Can anyone explain my mistake ?
>
> Hi All
>
> I am running this simple foreach loop:
> why do I get lv_num = <null> ? am I missing something ?
> Thanks
> Chanan
>
>
> my @arr = (1,2,3,4,5);
>
> foreach $lv_num (@arr)
> {
> print "Found $lv_num\n";
> last if ($lv_num == 3);
> }
>
> print "lv_num = $lv_num\n";
>
>
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