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Re^2: use of strict ....

by perlknight (Pilgrim)
on Nov 05, 2006 at 16:01 UTC ( #582320=note: print w/replies, xml ) Need Help??


in reply to Re: use of strict ....
in thread use of strict ....

Than why would it work if I took the "use strict" pragma out? BTW, it's a typal, it should be "CRITICAL". I took a look at utils.pm, it's a hash, not a method. To clarify, you saying I should use single qoute: 
 
exit $ERRORS{'CRITICAL'};

[download]
instead of double qoute: 
exit $ERRORS{"CRITICAL"};

[download]
because it intrepret the double qoute as: 
$CRITICAL->ERRORS();

[download]

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Re^3: use of strict ....
by imp (Priest) on Nov 05, 2006 at 18:50 UTC
    It doesn't matter if you use single, double, or no quotes. any of these are fine. 
    $ERRORS{CRITICAL}
$ERRORS{'CRITICAL'}
$ERRORS{"CRITICAL"}

    [download]

    The error was that you forgot the '$', so perl was treating ERRORS as a subroutine invocation, and passing the hashref {"CRITICAL" => undef} as the argument.

    You can verify that behaviour like this: 

    use Data::Dumper;
sub ERRORS {
    print "ERRORS called\n";
    print Dumper(\@_);
}

$a = ERRORS{"CRITICAL"};

    [download]
    Which outputs: 
    ERRORS called
$VAR1 = [
          {
            'CRITICAL' => undef
          }
        ];

    [download]
    By the way - in the future instead of saying "strict will puke" it would be better to provide the error.
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