Hi Alex,
On Sun, 9 Mar 2014 16:40:54 +1100
Alex Chiang <s3442...@student.rmit.edu.au> wrote:
> Hi all,
>
> I'm a perl beginner, and when I tries to practice delete built-in, I find
> it's not working as I supposed to.
>
> 44 my %employ_list = ("e10220" => "Du", "e10250" => "Vic");
> 45 # iterate thru with each
> 46 while ( my ($k, $v) = each %employ_list ) {
> 47 print " before: key:$k => value:$v \n";
> 48 if ($k eq "e10220") { delete $employ_list{$k}; }
In addition to what Uri said, you should not delete a key out of a hash (or
add keys) while iterating over it using each(), because this may confuse Perl:
http://perl-begin.org/tutorials/bad-elements/#modifying_iterated_array
(Note: http://perl-begin.org/ is a site I originated and maintain).
Regards,
Shlomi Fish
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