The following script, running under iis, gets:
"Can't call method "param" on an undefined value at test.pl line 15."
returned to the browser. Line 15 is marked with #####.

Clearly I don't understand how CGI and $CGI::Q works. Can anyone school me on this?

Thank you. 
#!/perl/perl.exe -w
use strict;
use CGI qw/:standard/;
use CGI::Carp qw(fatalsToBrowser);

&main();

sub main{
    trimParameters($CGI::Q);
    print header(), p('Done');
}

sub trimParameters{
    my $q = shift;
    foreach ( $q->param() ){ #####
    if ($q->param($_)) {
        $q->param($_,trim($q->param($_)));
    }
    }
}

sub trim{
    my ($v) = @_;
    $v =~ s/^\s*(.*?)\s*$/$1/s;
    return $v;
}

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In reply to Understanding $CGI::Q by daniel808

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