-- "Charles K. Clarkson" <[EMAIL PROTECTED]> wrote:
> John Ackley wrote:
>
>
> : while( ($service) = $SERVICE->fetchrow_array ) {
>
> According to the DBI docs:
>
> "If there are no more rows or if an error occurs,
> then fetchrow_array returns an empty list."
>
> When a value is returned, $service is set to
> that value.
> When we get to the end of the list, () is returned
> and
> $service is set to the undefined value. Since it
> tests
> false, the while loop stops with $service set to an
> undefined
> value.
>
> You can see this in the following script.
>
> use strict;
> use warnings;
> use Data::Dumper 'Dumper';
>
> my $service;
>
> ($service) = ();
>
> print Dumper $service;
>
John,
For a complete understanding of scope (not listerine)
: )
please read the following:
http://perl.plover.com/local.html#2_Localized_Filehandles
and
http://www.perlmonks.org/?node_id=564448
Wow...opened my eyes and I now fully understand global
and non global variables.
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